CVE-2026-22040

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nanomq/nanomq/security/advisories/GHSA-v57q-w88m-424r	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-04 22:16

Updated : 2026-03-18 16:09

NVD link : CVE-2026-22040

Mitre link : CVE-2026-22040

CVE.ORG link : CVE-2026-22040

JSON object : View

Products Affected

emqx

nanomq

CWE

CWE-416

Use After Free

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