CVE-2026-33039: Wwbn Avideo

High severity, CVSS 8.6. EPSS: 0.5% chance of exploitation in the next 30 days.

WWBN AVideo is an open source video platform. In versions 25.0 and below, the plugin/LiveLinks/proxy.php endpoint validates user-supplied URLs against internal/private networks using isSSRFSafeURL(), but only checks the initial URL. When the initial URL responds with an HTTP redirect (Location header), the redirect target is fetched via fakeBrowser() without re-validation, allowing an attacker to reach internal services (cloud metadata, RFC1918 addresses) through an attacker-controlled redirect. This issue is fixed in version 26.0.

Affected products

• Wwbn Avideo: before 26.0 (fixed in 26.0)

Published 2026-03-20. Last modified 2026-06-17.