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.
History

Wed, 10 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Halfgaar
Halfgaar flashmq
Vendors & Products Halfgaar
Halfgaar flashmq

Tue, 09 Jun 2026 23:30:00 +0000

Type Values Removed Values Added
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.
Title FlashMQ: Client can trigger uncaught exception on FlashMQ 1.26.1 and older
Weaknesses CWE-248
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-06-09T23:01:33.212Z

Updated: 2026-06-10T14:30:30.247Z

Reserved: 2026-05-13T21:04:10.933Z

Link: CVE-2026-46411

cve-icon Vulnrichment

Updated: 2026-06-10T14:30:20.373Z

cve-icon NVD

Status : Received

Published: 2026-06-10T00:16:53.407

Modified: 2026-06-10T00:16:53.407

Link: CVE-2026-46411

cve-icon Redhat

No data.