GHSA-G3HJ-MF85-679G AVideo: IDOR in uploadPoster.php Allows Any Authenticated User to Overwrite Scheduled Live Stream Posters and Trigger False Socket Notifications

Summary The plugin/Live/uploadPoster.php endpoint allows any authenticated user to overwrite the poster image for any scheduled live stream by supplying an arbitrary livescheduleid. The endpoint only checks User::isLogged but never verifies that the authenticated user owns the targeted schedule...