source: https://www.securityfocus.com/bid/16134/info

CS-Cart is prone to multiple SQL injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input before using it in SQL queries.

Successful exploitation could result in a compromise of the application, disclosure or modification of data, or may permit an attacker to exploit vulnerabilities in the underlying database implementation. 

http://www.example.com/index.php?target=products&mode=search&subcats=Y&type=extended&avail=Y&pshor=Y&pfull=Y&pname=Y&cid=0&q=&x=11&y=3&sort_by=[SQL]
http://www.example.com/index.php?target=products&mode=search&subcats=Y&type=extended&avail=Y&pshor=Y&pfull=Y&pname=Y&cid=0&q=%27&x=11&y=3&sort_by=product&sort_order=[SQL]