CVE-2016-9411: Mybb Merge System

Medium severity, CVSS 5.3. EPSS: 1.8% chance of exploitation in the next 30 days.

The Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allows remote attackers to obtain the installation path via vectors involving sending mails.

Affected products

• Mybb Merge System: up to and including 1.8.6
• Mybb Mybb: up to and including 1.8.6

Published 2017-01-31. Last modified 2026-06-17.