CVE-2026-32696NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
emqx nanomq emqx:nanomq | before 0.24.7 | NVD |
References
- https://github.com/nanomq/NanoNNG/commit/c20aa27e5290bb480a5315099952480d35f37a8bpatch
- https://github.com/nanomq/NanoNNG/pull/1394issue-tracking, patch
- https://github.com/nanomq/nanomq/releases/tag/0.24.7product, release-notes
- https://github.com/nanomq/nanomq/security/advisories/GHSA-77f4-wvq8-mp3pexploit, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.