Generate Post Thumbnails <= 0.8 is vulnerable to Cross Site Request Forgery (CSRF) Vulnerability

The Generate Post Thumbnails plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.8. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to perform an unauthorized action granted they can trick a site administrator into performing an action such as clicking on a link.