CVE-2026-46411

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 Vector

References

• https://github.com/halfgaar/FlashMQ/commit/29e08f7b97b6e3f96db923c2b6a260c47b49c195
• https://github.com/halfgaar/FlashMQ/releases/tag/v1.26.2
• https://github.com/halfgaar/FlashMQ/security/advisories/GHSA-g35r-265r-rxrh