Vulnerability ID: HTB22715 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_zimplit_cms.html Product: Zimplit CMS Vendor: Zimplit ( http://www.zimplit.com/ ) Vulnerable Version: Current at 22.11.2010 and Probably Prior Versions Vendor Notification: 22 November 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 "zimplit.php" script on "load" action to properly sanitize user-supplied input in "file" 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/path/zimplit.php?action=load&file=%3Cscript%3Ealert%28docume nt.cookie%29%3C/script%3E