CVE-2018-17128: Mybb

Medium severity, CVSS 5.4. EPSS: 74.8% chance of exploitation in the next 30 days.

A Persistent XSS issue was discovered in the Visual Editor in MyBB before 1.8.19 via a Video MyCode.

Affected products

• Mybb Mybb: before 1.8.19 (fixed in 1.8.19)

Published 2018-09-17. Last modified 2026-06-17.