Phorum 5.2.x < 5.2.17 'control.php' 'real_name' XSS

According to its self-reported version number, the instance of Phorum 5.2.x hosted on the remote website is earlier than 5.2.17 and therefore may be affected by a cross-site scripting vulnerability. The parameter 'realname' is not properly sanitized by the script 'control.php' before it is passed...