sanitization-verification

To test HTML sanitization against XSS payloads, you verify the removal of dangerous elements and attributes while confirming that safe content and legitimate attributes are preserved.

Sanitization verification is the process of testing sanitization effectiveness by validating round-trip safety and checking for regressions in legitimate content handling against XSS attack vectors.

To handle edge cases during HTML sanitization testing, you test various encoding and mixed-case attack vectors to ensure the sanitizer removes malicious elements without breaking legitimate content.

Yes, sanitization verification validates round-trip safety to ensure the sanitization process does not cause regressions or alter legitimate content while removing XSS vulnerabilities.

The best way to verify dangerous HTML removal while preserving safe content is to test the sanitizer against known XSS payloads and confirm legitimate attributes and functionality remain intact.

Your HTML sanitizer may leave malicious attributes due to unhandled edge cases or mixed-case attack vectors, requiring comprehensive sanitization verification to identify and close these security gaps.