CVE-2009-4813: Mybb

Medium severity, CVSS 4.3. EPSS: 1.5% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in myps.php in MyBB (aka MyBulletinBoard) 1.4.10 allows remote attackers to inject arbitrary web script or HTML via the username parameter in a donate action.

Affected products

• Mybb Mybb: version 1.4.10 only

Published 2010-04-27. Last modified 2026-06-16.