XSS Filter Evasion Cheat Sheet

The XSS Filter Evasion Cheat Sheet is a guide that outlines techniques attackers use to bypass security measures designed to block malicious scripts on websites. These filters aim to prevent hacking by stopping harmful code from running in users’ browsers. However, clever attackers find ways to cloak or disguise their injections—using special characters, encoding, or hidden tricks—so the filters don't detect them. The cheat sheet details these methods, helping security professionals understand potential vulnerabilities and improve defenses against cross-site scripting (XSS) attacks.