source: https://www.securityfocus.com/bid/42182/info

Quick.Cart is prone to multiple local file-include vulnerabilities and a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

An attacker can exploit the local file-include vulnerability using directory-traversal strings to view and execute local files within the context of the webserver process. Information harvested may aid in further attacks.

The attacker may leverage the cross-site scripting issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may let the attacker steal cookie-based authentication credentials and launch other attacks. 

The following example URIs are available:

http://www.example.com/nothing,important,our.file.name.html%00

http://www.example.com/?p=../path.to.our.php.file-nothing-important