CVE-2008-3966: Mybb

Medium severity, CVSS 4.3. EPSS: 1.3% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in MyBB (aka MyBulletinBoard) before 1.4.1 allow remote attackers to inject arbitrary web script or HTML via (1) a certain referrer field in usercp2.php, (2) a certain location field in inc/functions_online.php, and certain (3) tsubject and (4) psubject fields in moderation.php.

Affected products

• Mybb Mybb: up to and including 1.4.0; version 1.00 only; version 1.01 only; version 1.1.0 only; version 1.1.1 only; version 1.1.2 only; …

Published 2008-09-11. Last modified 2026-06-16.