The AR for WordPress plugin for WordPress is vulnerable to unauthorized double extension file upload due to a missing capability check on the set_ar_featured_image() function in all versions up to, and including, 7.3. This makes it possible for unauthenticated attackers to upload php files leveraging a double extension attack. It's important to note the file is deleted immediately and double extension attacks only work on select servers making this unlikely to be successfully exploited.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.