Multiple SQL injection vulnerabilities in MyBulletinBoard (MyBB) 1.00 RC4 allow remote attackers to execute arbitrary SQL commands via the (1) eid parameter to calendar.php, (2) idsql parameter to online.php, (3) usersearch parameter to memberlist.php, (4) pid parameter to editpost.php, (5) fid parameter to forumdisplay.php, (6) tid parameter to newreply.php, (7) sid parameter to search.php, (8) tid or (9) pid parameter to showthread.php, (10) tid parameter to usercp2.php, (11) tid parameter to printthread.php, or (12) pid parameter to reputation.php.