High 7.7Published Apr 20, 2026

CVE-2026-32135NanoMQ has Heap Buffer Overflow in URI Parameter Parsing

Updated under an hour ago (Oct 27, 2026, 12:20 PM ET)

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Exploited in the last 30 days

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Versions prior to 0.24.11 have a remotely triggerable heap buffer overflow in the `uri_param_parse` function of NanoMQ's REST API. The vulnerability occurs due to an off-by-one error when allocating memory for query parameter keys and values, allowing an attacker to write a null byte beyond the allocated buffer. This can be triggered via a crafted HTTP request. Version 0.24.11 patches the issue.

CVSS: 7.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
Weakness (CWE): CWE-122
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nanomq nanomq nanomq:nanomq (from the name)	before 0.24.11	CNA record
emqx nanomq emqx:nanomq	before 0.24.11	NVD

References

References

https://github.com/nanomq/nanomq/security/advisories/GHSA-6w96-9qw7-m599	x-refsource-confirm, exploit, vendor-advisory
https://github.com/nanomq/nanomq/issues/2247	x-refsource-misc, issue-tracking
https://github.com/nanomq/nanomq/commit/69a97b3b39cc218f044f1c8896f4d3d8757bb394	x-refsource-misc, patch

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.