Robots.txt optimization <= 1.4.5 - Cross Site Request Forgery

The Robots.txt optimization plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.4.5. This is due to missing nonce validation on the page function. This makes it possible for unauthenticated attackers to modify the settings for the plugin, granted they can trick a site administrator into performing an action such as clicking on a link. The impact of this vulnerability is unknown.