WWBN AVideo is an open source video platform. In 29.0 and earlier, there is a cross-site request forgery vulnerability on the 2FA toggle. plugin/LoginControl/set.json.php accepts POST type=set2FA value=false, calls LoginControl::setUser2FA(User::getId(), false) on the session-authenticated user, and returns. There is no forbidIfIsUntrustedRequest() call, no isTokenValid() check, no X-CSRF-Token/SameSite enforcement, and no re-authentication step. A cross-origin page that the victim visits while logged into the AVideo dashboard issues the POST via a hidden form (or fetch without credentials:"omit") and disables the victim's 2FA in one request.