WP Wallcreeper <= 1.6.1 - Missing Authorization to Authenticated (Susbcriber+) Cache Enable/Disable

The WP Wallcreeper plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the admin_notices hook in all versions up to, and including, 1.6.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to enable and disable caching.