CVE-2016-9419: Mybb

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Affected products

• Mybb Mybb: up to and including 1.8.7

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