CVE-2011-3621: Fluxbb

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

A reverse proxy issue exists in FluxBB before 1.4.7 when FORUM_BEHIND_REVERSE_PROXY is enabled.

Affected products

• Fluxbb Fluxbb: before 1.4.7 (fixed in 1.4.7)

Published 2020-01-22. Last modified 2026-06-16.