WWBN AVideo is an open source video platform. In versions 29.0 and prior, multiple AVideo JSON endpoints under "objects/" accept state-changing requests via "$_REQUEST"/"$_GET" and persist changes tied to the caller's session user, without any anti-CSRF token, origin check, or referer check. A malicious page visited by a logged-in victim can silently cast/flip the victim's like/dislike on any comment ("objects/comments_like.json.php"), post a comment authored by the victim on any video, with attacker-chosen text ("objects/commentAddNew.json.php"), and/or delete assets from any category ("objects/categoryDeleteAssets.json.php") when the victim has category management rights. Each endpoint is reachable from a browser via a simple "<img src="…">" tag or form submission, so exploitation only requires the victim to load an attacker-controlled HTML resource. Commit 7aaad601bd9cd7b993ba0ee1b1bea6c32ee7b77c contains a fix.