Vulnerability ID: HTB22391 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_ecomat_cms.html Product: Ecomat CMS Vendor: Codefabrik GmbH Vulnerable Version: 5.0 and Probably Prior Versions Vendor Notification: 18 May 2010 Vulnerability Type: XSS (Cross Site Scripting) Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response Risk level: Medium Credit: High-Tech Bridge SA (http://www.htbridge.ch/) Vulnerability Details: User can execute arbitrary JavaScript code within the vulnerable application. The vulnerability exists due to failure in the "index.php" script to properly sanitize user-supplied input in "lang" 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/index.php?type=web&lang=xx%22+onmouseover=alert%28123%29+sty le=position:absolute;left:0;top:0;width:100%;height:100%+&show=25&mhs=0