CVE-2006-3954: Mybulletinboard

Medium severity, CVSS 5.0. EPSS: 1.7% chance of exploitation in the next 30 days.

Directory traversal vulnerability in usercp.php in MyBB (aka MyBulletinBoard) 1.x allows remote attackers to read arbitrary files via a .. (dot dot) in the gallery parameter in a (1) avatar or (2) do_avatar action.

Affected products

• Mybulletinboard Mybulletinboard: version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only; version 1.0_final only; version 1.0_pr2 only; …

Published 2006-08-01. Last modified 2026-06-16.