CVE-2015-4552: Mybb

Medium severity, CVSS 4.3. EPSS: 1.9% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in the quick edit function in xmlhttp.php in MyBB (aka MyBulletinBoard) before 1.8.5 allows remote attackers to inject arbitrary web script or HTML via the content of a post.

Affected products

• Mybb Mybb: up to and including 1.8.4

Published 2015-09-03. Last modified 2026-06-17.