CVE-2026-47276
MEDIUMNULL Pointer Dereference in REST API properties_parse via Malformed user_properties
Title source: cnaDescription
In nanomq versions 0.24.11 and earlier, a NULL pointer dereference in `properties_parse()` allows an authenticated attacker to crash the NanoMQ broker by sending a POST request to `/api/v4/mqtt/publish` with `user_properties` as a JSON array instead of a JSON object. The crash occurs because `strlen()` is called on a NULL `item->string` pointer when iterating over array elements. An authenticated attacker can exploit this to crash the NanoMQ broker process. This is patched in version 0.24.14.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/nanomq/nanomq/security/advisories/GHSA-qq2v-xvxg-3hvf
Scores
CVSS v3
6.5
EPSS
0.0024
EPSS Percentile
14.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (1)
nanomq/nanomq
<= 0.24.11
Published
Jul 20, 2026
Tracked Since
Jul 20, 2026