WP Google Map Plugin <= 4.0.9 - Cross-Site Request Forgery to PHP Object Injection

The WP Google Map Plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.1.0. This is due to missing or incorrect nonce validation on the save() function. This makes it possible for unauthenticated attackers to exploit PHP Object Injection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.