CVE-2015-2786
Unspecified vulnerability in MyBB (aka MyBulletinBoard) before 1.8.4 has unknown attack vectors related to "Group join request notifications sent to wrong group leaders."
Date published : 2015-03-29
http://www.securityfocus.com/bid/73394
MyBB 1.8.4 Released – Feature Update, Security & Maintenance Release