The Plugin updates blocker plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.2. This is due to missing or incorrect nonce validation on the pub_save action handler. This makes it possible for unauthenticated attackers to disable or enable plugin updates via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
https://plugins.trac.wordpress.org/browser/plugin-update-blocker/tags/0.2/dpu-menu.php#L3