Multiple cross-site scripting (XSS) vulnerabilities in Phorum 3.1 through 5.0.3 beta allow remote attackers to inject arbitrary web script or HTML via the (1) HTTP_REFERER parameter to login.php, (2) HTTP_REFERER parameter to register.php, or (3) target parameter to profile.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15494
http://www.securityfocus.com/bid/9882
http://securitytracker.com/id?1009433
http://secunia.com/advisories/11157