source: https://www.securityfocus.com/bid/21726/info

Efkan Forum is prone to an SQL-injection vulnerability because the application fails 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/ScriptPath/default.asp?islem=gruplar&grup=[SQL]