CVE-2026-47276
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.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Deferred - security-advisories@github.com
- Published
- 2026-07-20
- Last modified
- 2026-07-20
- Weaknesses
- CWE-476
Affected products
References
- https://github.com/nanomq/nanomq/security/advisories/GHSA-qq2v-xvxg-3hvf
