newreply.php in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allows remote attackers to have unspecified impact by leveraging a missing permission check.Referenceshttp://www.securityfocus.com/bid/94395http://www.openwall.com/lists/oss-security/2016/11/18/1http://www.openwall.com/lists/oss-security/2016/11/10/8https://blog.mybb.com/2016/03/11/mybb-1-8-7-merge-system-1-8-7-release/