SQL injection vulnerability in inc/datahandlers/pm.php in MyBB before 1.2.12 allows remote authenticated users to execute arbitrary SQL commands via the options[disablesmilies] parameter to private.php.
https://www.exploit-db.com/exploits/5070
http://www.vupen.com/english/advisories/2008/0238
http://www.securitytracker.com/id?1019257
http://www.securityfocus.com/archive/1/486763/100/200/threaded