SQL injection vulnerability in inc/datahandlers/user.php in MyBB (aka MyBulletinBoard) before 1.4.7 allows remote authenticated users to execute arbitrary SQL commands via the birthdayprivacy parameter.
http://www.vupen.com/english/advisories/2009/1653
http://www.exploit-db.com/exploits/9001
http://secunia.com/advisories/35517
http://mybboard.net/download/104
http://blog.mybboard.net/2009/06/15/mybb-147-released-security-update/