The Classified Listing – Classified ads & Business Directory Plugin plugin for WordPress is vulnerable to unauthorized modification of data that can lead to privilege escalation due to a misconfigured check on the 'rtcl_import_settings' function in all versions up to, and including, 3.1.15.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update limited arbitrary options on the WordPress site. This can be leveraged to update the Subscriber role with Administrator-level capabilities to gain administrative user access to a vulnerable site. The vulnerability is limited in that the option updated must have a value that is an array.

The Classified Listing – Classified ads & Business Directory Plugin plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on several functions like export_forms(), import_forms(), update_fb_options(), and many more in all versions up to, and including, 3.1.7. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify forms and various other settings.

The Classified Listing – Classified ads & Business Directory Plugin plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the rtcl_fb_gallery_image_delete AJAX action in all versions up to, and including, 3.0.10.3. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary attachements.