Interactive cross-site scripting (XSS) cheat sheet for 2025, brought to you by PortSwigger. Actively maintained, and regularly updated with new vectors.

Cross-Site Scripting (XSS) attacks are a type of injection, in which malicious scripts are injected into otherwise benign and trusted web sites. XSS attacks occur when an attacker uses a web …

This cheat sheet demonstrates that input filtering is an incomplete defense for XSS by supplying testers with a series of XSS attacks that can bypass certain XSS defensive filters.

Feb 26, 2025 · This XSS cheat sheet provides a comprehensive guide covering concepts, payloads, prevention strategies, and tools to understand and defend against XSS attacks …

Jul 3, 2025 · Secure your web apps! XSS cheat sheet with attack examples, bypass techniques & prevention methods. Essential cybersecurity reference 2025.

The definitive XSS payload directory, featuring a comprehensive and categorized cheat sheet with hundreds of verified payloads for ethical hackers and security researchers.

Mar 18, 2025 · This XSS cheat sheet is a valuable resource for anyone involved in web security, providing essential guidelines and techniques to prevent XSS attacks. It covers various attack …