Related Posts Lite <= 1.12 - Cross-Site Request Forgery

The Related Posts Lite plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.12. This is due to missing or incorrect nonce validation on the settings update functionality. This makes it possible for unauthenticated attackers to modify plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.