CVE-2026-22040

MEDIUM

NanoMQ < 0.24.6 - Use-After-Free via High-Frequency Publish and Reconnect Traffic

Title source: llm
STIX 2.1

Description

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In version 0.24.6, by generating a combined traffic pattern of high-frequency publishes and rapid reconnect/kick-out using the same ClientID and massive subscribe/unsubscribe jitter, it is possible to reliably trigger heap memory corruption in the Broker process, causing it to exit immediately with SIGABRT due to free(): invalid pointer. As of time of publication, no known patched versions are available.

References (1)

Core 1
Core References

Scores

CVSS v3 5.3
EPSS 0.0022
EPSS Percentile 12.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-416
Status published
Products (1)
emqx/nanomq < 0.24.6
Published Mar 04, 2026
Tracked Since Mar 05, 2026