PT-2026-29123 · Nanomq · Nanomq

Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-32696

NVD

CVSS v3.1

3.1

Low

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

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.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-32696

Affected Products

Nanomq

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-32696 · Security Note
• https://github.com/nanomq/nanomq/releases/tag/0.24.7 · Note
• https://github.com/nanomq/NanoNNG/commit/c20aa27e5290bb480a5315099952480d35f37a8b · Note
• https://github.com/nanomq/NanoNNG/pull/1394 · Note
• https://github.com/nanomq/nanomq/security/advisories/GHSA-77f4-wvq8-mp3p · Note