Input validation vulnerability in Membership Plugin – Restrict Content 3.2.3

The Restrict Content plugin for WordPress is vulnerable to a type of attack known as Reflected Cross-Site Scripting. This means that an unauthenticated attacker could inject malicious code into a page, which then gets executed if a user clicks on a link. This vulnerability affects all versions up to and including version 3.2.2, due to the lack of proper input sanitization and output escaping.