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Github Security Blog
Github Security Blog
added 2026/03/20 8:56 p.m.11 views

AVideo - Incomplete Fix for CVE-2026-27568: Stored XSS via Markdown `javascript:` URI Bypasses ParsedownSafeWithLinks Sanitization

Summary The fix for CVE-2026-27568 GHSA-rcqw-6466-3mv7 introduced a custom ParsedownSafeWithLinks class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's safeMode. This creates a bypass: markdown link syntax text is processed by Parsedown's inlineLink method, which...

6.1CVSS5.9AI score0.00229EPSS
SaveExploits1References4Affected Software1
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