This article is focused on providing application security testing professionals with a guide to assist in Cross Site Scripting testing. XSS Filter Evasion Cheat Sheet ¶ Introduction ¶ Methods to Bypass WAF – Cross-Site Scripting jsĪssisting XSS with HTTP Parameter Pollution Locally hosted XML with embedded JavaScript that is generated using an XML data islandĪssuming you can only fit in a few characters and it filters against. Using ActionScript Inside Flash for Obfuscation STYLE Tag (Older versions of Netscape only)ĭIV Background-image with Unicoded XSS ExploitĭIV Background-image Plus Extra Characters STYLE Attribute using a Comment to Break-up Expression STYLE Tags with Broken-up JavaScript for XSS
Livescript (older versions of Netscape only) Spaces and Meta Chars Before the JavaScript in Images for XSS Hexadecimal HTML Character References Without Trailing Semicolons Insecure Direct Object Reference Preventionĭefault SRC Tag to Get Past Filters that Check SRC Domainĭefault SRC Tag by Leaving it out Entirelyĭecimal HTML Character References Without Trailing Semicolons
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