source: https://www.securityfocus.com/bid/15631/info

Entergal MX 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 an SQL query.

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.

Versions 2.0 and prior are vulnerable; other versions may also be affected. 

http://www.example.com/?action=showcat&idcat=[SQL]
http://www.example.com/?action=[SQL]