source: https://www.securityfocus.com/bid/22545/info

Fullaspsite Shop is prone to multiple input-validation issues, including multiple cross-site scripting issues and an SQL-injection issue, because the application fails to properly sanitize user-supplied input.

A successful exploit of these vulnerabilities could allow an attacker to compromise the application, access or modify data, steal cookie-based authentication credentials, or even exploit vulnerabilities in the underlying database implementation. Other attacks are also possible. 

http://www.example.com/ScriptPath/listmain.asp?cat=<script>alert(document.cookie);</script>