CVE-2026-22040
NanoMQ 0.24.6 Use-After-Free Leading to Heap Corruption and Broker Crash
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.
INFO
Published Date :
March 4, 2026, 10:16 p.m.
Last Modified :
March 18, 2026, 4:09 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Monitor for vendor patches or updates.
- Apply patches when they become available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-22040.
| URL | Resource |
|---|---|
| https://github.com/nanomq/nanomq/security/advisories/GHSA-v57q-w88m-424r | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-22040 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-22040
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-22040 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-22040 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 18, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:* versions up to (excluding) 0.24.6 Added Reference Type GitHub, Inc.: https://github.com/nanomq/nanomq/security/advisories/GHSA-v57q-w88m-424r Types: Exploit, Vendor Advisory -
New CVE Received by [email protected]
Mar. 04, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H Added CWE CWE-416 Added Reference https://github.com/nanomq/nanomq/security/advisories/GHSA-v57q-w88m-424r