source: http://www.securityfocus.com/bid/36003/info

ViArt CMS is prone to multiple cross site scripting vulnerabilities because the application fails to sufficiently sanitize user-supplied data.

Attacker-supplied HTML or JavaScript code could run in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials; other attacks are also possible. 

http://www.example.com/cms-demo/forums.php?category_id=1>"><ScRiPt %0D%0A>alert(522558583855)%3B</ScRiPt>