CVE-2017-8103: Mybb

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

In MyBB before 1.8.11, the Email MyCode component allows XSS, as demonstrated by an onmouseover event.

Affected products

• Mybb Mybb: up to and including 1.8.10

Published 2017-04-24. Last modified 2026-06-17.