SQL injection vulnerability in forum.php in Orca Forum 4.3b and earlier allows remote attackers to execute arbitrary SQL commands via the msg parameter.
http://www.vupen.com/english/advisories/2005/2572
http://secunia.com/advisories/17721
http://pridels0.blogspot.com/2005/11/orca-forum-43x-msg-sql-inj.html