UGroup 2.6.2 - 'forum.php?FORUM_ID' SQL Injection

source: https://www.securityfocus.com/bid/15591/info

UGroup is prone to 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. 

/forum.php?FORUM_ID=[SQL]