The The Bucketlister plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the bucketlister_do_admin_ajax() function in all versions up to, and including, 0.1.5. This makes it possible for authenticated attackers, with Subscriber-level access and above, to add delete or modify arbitrary bucket list items.
https://plugins.trac.wordpress.org/browser/the-bucketlister/tags/0.1.5/bucketlister.php#L185