XSS vulnerability in CMSQLite

[advisory@xxxxxxxxxxx]

Vulnerability ID: HTB22464
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_cmsqlite.html
Product: CMSQLite
Vendor: CMSQLite-Team
Vulnerable Version: 1.3 and Probably Prior Versions
Vendor Notification: 29 June 2010 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Medium 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing 
(http://www.htbridge.ch/) 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.

The vulnerability exists due to failure in the "/admin/editMenu.php" script to 
properly sanitize user-supplied input in "langId" variable. Successful 
exploitation of this vulnerability could result in a compromise of the 
application, theft of cookie-based authentication credentials, disclosure or 
modification of sensitive data.

An attacker can use browser to exploit this vulnerability. The following PoC is 
available:
http://host/admin/editMenu.php?id=1&langId=en'"><script>alert(document.cookie)</script>