Multiple SQL injection vulnerabilities in Enthusiast 3.1 allow remote attackers to execute arbitrary SQL commands via the cat parameter to (1) show_owned.php, (2) show_joined.php, and possibly other files.
Multiple cross-site scripting (XSS) vulnerabilities in Enthusiast 3.1 allow remote attackers to inject arbitrary web script or HTML via the URI for (1) show_owned.php or (2) show_joined.php.