WP Google Map Plugin <= 4.4.2 - Cross-Site Request Forgery via delete()

The WP Google Map Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.4.2. This is due to missing or incorrect nonce validation on the delete() function of the WPGMP_Model_Group_Map, WPGMP_Model_Location, and WPGMP_Model_Map classes. This makes it possible for unauthenticated attackers to delete a location, category, or map via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.