CVE-2026-46411

MEDIUM

FlashMQ: Client can trigger uncaught exception on FlashMQ 1.26.1 and older

Title source: cna
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 6.5
EPSS 0.0030
EPSS Percentile 21.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-248
Status published
Products (1)
halfgaar/FlashMQ < 1.26.2
Published Jun 10, 2026
Tracked Since Jun 10, 2026