source: https://www.securityfocus.com/bid/16169/info

427BB 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.

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.

This issue affects versions 2.2 and 2.2.1; other versions may also be vulnerable. 

http://www.example.com/bb427/showthread.php?ForumID=999%20union%20select%20UserName,Passwrod,null,null%20from%20prefPersonal