CVE-2014-2021: vBulletin

Low severity, CVSS 3.5. EPSS: 3.4% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in admincp/apilog.php in vBulletin 4.2.2 and earlier, and 5.0.x through 5.0.5 allows remote authenticated users to inject arbitrary web script or HTML via a crafted XMLRPC API request, as demonstrated using the client name.

Affected products

• vBulletin vBulletin: up to and including 4.2.2; version 5.0.0 only; version 5.0.1 only; version 5.0.2 only; version 5.0.3 only; version 5.0.4 only; …

Published 2014-10-25. Last modified 2026-06-17.