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Anchor Attributes CSS Closing Comments HTML HTML5 JavaScript Protocol Script URL XSS attribute bypass challenge char comment data encoding entities entity event events expression flash fun handler href img innerHTML navigateURL obfusc obfuscation onload prompt properties regex space src string strings style svg tag tags test uri vbscript waf xml

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Description Vector Created by
String quotes in JS context <script>s*num* = *chr**num**chr*;if (typeof s*num* == "string" && s*num* == "*num*") logChr(*num*);</script> @blubbfiction
Characters that start JavaScript double quote strings <script> *chr*"; logChr(*num*) </script> @peksa
Characters that result in multiline strings <script> var a = "*chr* "; logChr(*num*); </script> @tifkin_
Characters allowed after string multiline separator <script> var x = "asdf\*chr* asdf"; logChr(*num*); </script> @tifkin_
String variables <script> props=props.concat(Object.getOwnPropertyNames(window)); for(var i=-100;i<100;i++) { props.push(i); } props.forEach(function(){ if(''[arguments[0]])customLog(arguments[0]); }) </script> @garethheyes
Characters eating backslash in javascript string 2 <script>if("x\*chr*".length==2) { log(*num*);}</script> @mhswende
Characters eating backslash in javascript string <script>if("x\*chr*".length==1) { log(*num*);}</script> @mhswende
Characters ignored inside javascript string v2 <script>if("x*chr*x" == "xx") { log(*num*);}</script> @mhswende
Uncode sequences generating illegitimate ASCII <script> "\ud83d\u*hex4*".match(/.*<.*/) ? log(*num*) : null; </script> @0x6D6172696F
Characters consuming backslashes and breaking JS strings <script>a='abc\*chr*\';log(*num*)//def';</script> @0x6D6172696F
Characters breaking CSS strings allowing expression "'`>ABC<div style="font-family:'foo*chr*;x:expression(log(*num*));/*';">DEF @0x6D6172696F
Characters ending CSS values allowing expressions "'`>ABC<div style="font-family:'foo'*chr*x:expression(log(*num*));/*';">DEF @0x6D6172696F