User Registration & Membership <= 4.4.8 - Cross-Site Request Forgery to Arbitrary Post Deletion

The User Registration & Membership – Custom Registration Form Builder, Custom Login Form, User Profile, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.4.8. This is due to missing or incorrect nonce validation on the 'process_row_actions' function with the 'delete' action. This makes it possible for unauthenticated attackers to delete arbitrary post via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.