The Unify plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'init' action in all versions up to, and including, 3.4.9. This makes it possible for unauthenticated attackers to delete specific plugin options via the 'unify_plugin_downgrade' parameter.
https://plugins.trac.wordpress.org/changeset/3447706/
https://plugins.trac.wordpress.org/browser/unify/tags/3.4.9/Services/Hooks.php#L154