GHSA-m7r8-6q9j-m2hc: WWBN AVideo has an incomplete fix for CVE-2026-33500: XSS

April 14, 2026

The incomplete XSS fix in AVideo’s ParsedownSafeWithLinks class overrides inlineMarkup for raw HTML but does not override inlineLink() or inlineUrlTag(), allowing javascript: URLs in markdown link syntax to bypass sanitization.

References

github.com/WWBN/AVideo
github.com/WWBN/AVideo/commit/3ae02fa240939dbefc5949d64f05790fd25d728d
github.com/WWBN/AVideo/security/advisories/GHSA-m7r8-6q9j-m2hc
github.com/advisories/GHSA-m7r8-6q9j-m2hc
nvd.nist.gov/vuln/detail/CVE-2026-33500

Code Behaviors & Features

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