Vulnerability Description
FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.26.2, authorized clients have the ability to exceed the permitted over-commit of their write buffer and triggering an internal safe-guard exception. This exception was in a path that was not catchable, and therefore causes a server abort. This issue has been patched in version 1.26.2.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/halfgaar/FlashMQ/commit/29e08f7b97b6e3f96db923c2b6a260c47b49c
- https://github.com/halfgaar/FlashMQ/releases/tag/v1.26.2
- https://github.com/halfgaar/FlashMQ/security/advisories/GHSA-g35r-265r-rxrh
FAQ
What is CVE-2026-46411?
CVE-2026-46411 is a vulnerability with a CVSS score of 6.5 (MEDIUM). FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.26.2, authorized clients have the ability to exceed the permitted over-commit of their write buffer and trigger...
How severe is CVE-2026-46411?
CVE-2026-46411 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46411?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.