The Profile Builder – User Profile & User Registration Forms WordPress plugin is vulnerable to Cross-Site Scripting due to insufficient escaping and sanitization of the site_url parameter found in the ~/assets/misc/fallback-page.php file which allows attackers to inject arbitrary web scripts onto a pages that executes whenever a user clicks on a specially crafted link by an attacker. This affects versions up to and including 3.6.1.
CWE-79, CWE-79