CVE-2011-3621
CRITICALCVSS 9.8/10EPSS 1.20%
Last modified
CVE-2011-3621 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A reverse proxy issue exists in FluxBB before 1.4.7 when FORUM_BEHIND_REVERSE_PROXY is enabled.. EPSS estimates a 1.20% chance of exploitation in the next 30 days.
Description
A reverse proxy issue exists in FluxBB before 1.4.7 when FORUM_BEHIND_REVERSE_PROXY is enabled.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fluxbb | Fluxbb | < 1.4.7 |
References
- https://fluxbb.org/forums/viewtopic.php?id=5751Vendor Advisory
- https://www.openwall.com/lists/oss-security/2011/10/18/8Mailing List, Third Party Advisory
- https://fluxbb.org/forums/viewtopic.php?id=5751Vendor Advisory
- https://www.openwall.com/lists/oss-security/2011/10/18/8Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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 score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.
How do I fix CVE-2011-3621?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2011-3621?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST