ImageMapper <= 1.2.6 - Cross-Site Request Forgery to Plugin Settings Change via ajax

The ImageMapper plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.2.6. This is due to missing or incorrect nonce validation on multiple functions. This makes it possible for unauthenticated attackers to update the plugin settings via a forged request, granted they can trick a site administrator into performing an action such as clicking on a link.