source: https://www.securityfocus.com/bid/18024/info

Cosmoshop is prone to an SQL-injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input before using it in an SQL query. 

A successful exploit could allow an attacker to compromise the application, access or modify data, or exploit vulnerabilities in the underlying database implementation.

http://www.example.com/cgi-bin/lshop.cgi?action=showdetail&artnum=10[' UNION SELECT OR OTHER SQL]&wkid=2002g&ls=d&nocache=