User Role by BestWebSoft <= 1.6.6 - Cross-Site Request Forgery to Privilege Escalation

The User Role by BestWebSoft plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.6.6. This is due to missing nonce validation in the edit-role-page.php file. This makes it possible for unauthenticated attackers to modify the capabilities of individual roles to elevate individual user privileges via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.