CVE-2026-33683: Wwbn Avideo

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

WWBN AVideo is an open source video platform. In versions up to and including 26.0, a sanitization order-of-operations flaw in the user profile "about" field allows any registered user to inject arbitrary JavaScript that executes when other users visit their channel page. The `xss_esc()` function entity-encodes input before `strip_specific_tags()` can match dangerous HTML tags, and `html_entity_decode()` on output reverses the encoding, restoring the raw malicious HTML. Commit 7cfdc380dae1e56bbb5de581470d9e9957445df0 contains a patch.

Affected products

• Wwbn Avideo: up to and including 26.0

Published 2026-03-23. Last modified 2026-06-17.