Envo Extra < 1.8.4 - Cross-Site Request Forgery

Description

The Envo Extra plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.8.3. This is due to missing or incorrect nonce validation on the ajax_required_plugins_activate function. This makes it possible for unauthenticated attackers to activate plugins required by Envo Extra via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.