The Cardealer theme for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check and missing filename sanitization on the demo theme scheme AJAX functions in versions up to, and including, 1.6.4. This makes it possible for authenticated attackers, with subscriber-level access and above, to change or delete arbitrary css and js files.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.