CVE-2011-3621

CVE-2011-3621 is a critical-severity vulnerability in Fluxbb with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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

Frequently asked questions

What is CVE-2011-3621?
A reverse proxy issue exists in FluxBB before 1.4.7 when FORUM_BEHIND_REVERSE_PROXY is enabled.
How severe is CVE-2011-3621?
CVE-2011-3621 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2011-3621 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3621?
CVE-2011-3621 affects Fluxbb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-3621?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-3621 published?
CVE-2011-3621 was published on 2020-01-22 and last updated on 2026-06-16.

References

Affected products (1)

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