CM Download Manager < 2.9.0 is vulnerable to Download Unpublish via CSRF vulnerability

The CM Download Manager plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to 2.9.0. This is due to missing or incorrect nonce validation on the 'unpublishHeader' function. This makes it possible for unauthenticated attackers to unpublish downloads via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.