EUVD-2026-14486
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Lifecycle Timeline
3Description
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `plugin/Permissions/setPermission.json.php` endpoint accepts GET parameters for a state-changing operation that modifies user group permissions. The endpoint has no CSRF token validation, and the application explicitly sets `session.cookie_samesite=None` on session cookies. This allows an unauthenticated attacker to craft a page with `<img>` tags that, when visited by an admin, silently grant arbitrary permissions to the attacker's user group - escalating the attacker to near-admin access. As of time of publication, no known patched versions are available.
Analysis
A Cross-Site Request Forgery (CSRF) vulnerability in WWBN AVideo open source video platform versions up to and including 26.0 allows unauthenticated attackers to escalate privileges to near-admin access by tricking an administrator into visiting a malicious page. The vulnerability exists in the setPermission.json.php endpoint which accepts state-changing operations via GET requests without CSRF token validation, compounded by the application's explicit SameSite=None cookie setting. …
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Remediation
Within 24 hours: Inventory all AVideo installations, identify version numbers, and restrict administrator browsing on affected systems. Within 7 days: Implement SameSite cookie enforcement at the WAF/reverse proxy level, disable the setPermission.json.php endpoint if not critical to operations, and apply compensating controls listed below. …
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External POC / Exploit Code
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