CVE-2026-32696

LOW SEVERITY

CVSS Score & Metrics

Base Score

3.1 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L                                    

Vulnerability Description

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In NanoMQ version 0.24.6, after enabling auth.http_auth (HTTP authentication), when a client connects to the broker using MQTT CONNECT without providing username/password, and the configuration params uses the placeholders %u / %P (e.g., username="%u", password="%P"), the HTTP request construction phase enters auth_http.c:set_data(). This results in calling strlen() on a NULL pointer, causing a SIGSEGV crash. This crash can be triggered remotely, resulting in a denial of service. This issue has been patched in version 0.24.7.

Vulnerability Details

Published Date

March 30, 2026

Last Modified

April 01, 2026

CWE ID

CWE-476

Source

NVD

Vendor

nanomq

Product

nanomq

External References

https://github.com/nanomq/NanoNNG/commit/c20aa27e5290bb480a5315099952480d35f37a8b
https://github.com/nanomq/NanoNNG/pull/1394
https://github.com/nanomq/nanomq/releases/tag/0.24.7
https://github.com/nanomq/nanomq/security/advisories/GHSA-77f4-wvq8-mp3p

CVE-2026-32696

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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