The FindAll Listing plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.0.5. This is due to the findall_listing_user_registration_additional_params function not restricting what user roles a user can register with. This makes it possible for unauthenticated attackers to supply the administrator role during registration and gain administrator access to the site. Note: The vulnerability can only be exploited if the FindAll Membership plugin is also activated, because user registration is in that plugin.
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.