Vulnerability ID: HTB22467
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_pligg_search_module.html
Product: Pligg
Vendor: Pligg, LLC ( http://www.pligg.com/demo/ ) 
Vulnerable Version: 1.0.4 and Probably Prior Versions
Vendor Notification: 01 July 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 "search.php" script to properly sanitize user-supplied input in "search" 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/search/1"><script>alert(document.cookie)</script>