phpBB2 2.0.22 Cross Site Scripting Vulnerability

Opencosmo Security
http://www.opencosmo.com

Author: Alfredo Panzera, Opencosmo Security
Vendor: phpBB.com
Version: 2.0.22

Exploit:
Go to http://[website]/forum/admin/admin_groups.php and into 'Group description:' insert your XSS.