CVE-2026-47276: medium-severity vulnerability in nanomq
NULL Pointer Dereference in REST API properties_parse via Malformed user_properties
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
nanomq · nanomqRelated CVEs — nanomq
In the same product, most dangerous first.
CVE-2026-32135HIGHNanoMQ has Heap Buffer Overflow in URI Parameter ParsingEPSS 0.5%CVE-2026-25627MEDIUMnanomq: OOB Read / Crash (DoS) via Malformed MQTT Remaining Length over WebSocketEPSS 0.5%CVE-2026-44639LOWNanoMQ: O(N²) Denial of Service in MQTT v5 Property ParsingEPSS 0.4%CVE-2026-32696LOWNanoMQ HTTP Auth: Missing username/password can trigger a NULL-pointer strlen() in auth_http.c:set_data(), causing a process crash — SIGSEGV, remotely triggerableEPSS 0.4%CVE-2026-32134MEDIUMNanoMQ: NULL Pointer Dereference Crash in tcptran_pipe_peer During Session RestoreEPSS 0.4%CVE-2025-59946HIGHNanoMQ has a Use After Free vulnerability via sub info listEPSS 0.4%