CVE-2026-44639 - CERT CVE
ID CVE-2026-44639
Sažetak NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's MQTT v5 property decoder in nng/src/supplemental/mqtt/mqtt_codec.c uses property_append() to walk the entire linked list for each property added by decode_buf_properties(). A remote unauthenticated client can supply a PUBLISH or SUBSCRIBE packet containing many User Properties, causing O(N²) linked-list insertion and CPU work that makes the broker unresponsive; repeated packets can sustain the denial of service. This issue is fixed in version 0.24.14.
Reference
CVSS
Base: 3.7
Impact: 1.4
Exploitability:2.2
Pristup
VektorSloženostAutentikacija
NETWORK HIGH NONE
Impact
PovjerljivostCjelovitostDostupnost
NONE NONE LOW
CVSS vektor CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Zadnje važnije ažuriranje 18-09-2026 - 18:17
Objavljeno 18-09-2026 - 17:16