EUVD-2026-16732
GHSA-73gr-r64q-7jh4
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
3Tags
Description
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `categories.json.php` endpoint, which serves the category listing API, fails to enforce user group-based access controls on categories. In the default request path (no `?user=` parameter), user group filtering is entirely skipped, exposing all non-private categories including those restricted to specific user groups. When the `?user=` parameter is supplied, a type confusion bug causes the filter to use the admin user's (user_id=1) group memberships instead of the current user's, rendering the filter ineffective. Commit 6e8a673eed07be5628d0b60fbfabd171f3ce74c9 contains a fix.
Analysis
WWBN AVideo versions up to 26.0 expose all non-private video categories to unauthenticated remote attackers due to missing access control enforcement in the categories.json.php endpoint. The vulnerability combines two distinct flaws: complete bypass of group-based filtering when no user parameter is supplied, and a type confusion bug that substitutes the admin user's group memberships when a user parameter is present, allowing unauthorized disclosure of category metadata intended for restricted user groups. …
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Remediation
Within 30 days: Identify affected systems running versions and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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