XSStrike

xsstrike -u "<url>" --crawl

Advanced XSS scanner with intelligent fuzzing and context detection, includes crawl mode.

When you need to automatically detect XSS in a web application. XSStrike is smarter than other scanners because it analyzes the context (attributes, script, html) and generates specific payloads. Crawl mode allows discovering hidden parameters. It is ideal for a first XSS pass on multiple endpoints.

If the site has a strong WAF that blocks common payloads, it may not detect anything. Also, if the application is highly dynamic and payloads alter state, it can generate false positives. In that case, prefer manual testing.