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Findings

CVE-2026-33500

WWBN AVideo is an open source video platform.

Published Mar 23, 2026 · updated Jun 17, 2026 · wwbn avideo

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's . This creates a bypass: markdown link syntax is processed by Parsedown's method, which does not go through the custom sanitization (that only handles raw HTML tags). With disabled, Parsedown's built-in URI filtering ( / ) is also inactive. An attacker can inject stored XSS via comment markdown links. Commit 3ae02fa240939dbefc5949d64f05790fd25d728d contains a patch.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 23, 2026 · NIST NVD

    Detected

    WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's . This creates a bypass: markdown link syntax is processed by Parsedown's method, which does not go through the custom sanitization (that only handles raw HTML

  2. Jun 17, 2026 · NIST NVD

    Updated

    WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's . This creates a bypass: markdown link syntax is processed by Parsedown's method, which does not go through the custom sanitization (that only handles raw HTML

Affected

  • cpe wwbn/avideoversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-33500

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-33500

    WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's

    nvd.nist.gov

References