source: http://www.securityfocus.com/bid/13462/info
   
ViArt Shop is affected by multiple cross-site scripting and HTML injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input before using it in dynamically generated content.
   
Attacker-supplied HTML and script code would be able to access properties of the site, potentially allowing for theft of cookie-based authentication credentials. An attacker could also exploit this issue to control how the site is rendered to the user; other attacks are also possible.
   
These issues are reported to affect ViArt Shop Enterprise version 2.1.6; other versions may also be vulnerable. 

http://www.example.com/product_details.php?item_id=4&category_id=0[XSS-CODE]