CVE-2011-5133: Mybb

High severity, CVSS 10.0. EPSS: 1.7% chance of exploitation in the next 30 days.

Unspecified vulnerability in MyBB before 1.6.5 has unknown impact and attack vectors, related to an "unparsed user avatar in the buddy list."

Affected products

• Mybb Mybb: up to and including 1.6.4; version 1.1.0 only; version 1.1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; …

Published 2012-08-30. Last modified 2026-06-16.