CVE-2026-44639

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's MQTT v5 property decoder in nng/src/supplemental/mqtt/mqttcodec.c uses propertyappend to walk the entire linked list for each property added by decodebufproperties. A remote unauthenticated client can supply a PUBLISH or SUBSCRIBE packet...

CVE-2026-44639 NanoMQ: O(N²) Denial of Service in MQTT v5 Property Parsing

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's MQTT v5 property decoder in nng/src/supplemental/mqtt/mqttcodec.c uses propertyappend to walk the entire linked list for each property added by decodebufproperties. A remote unauthenticated client can supply a PUBLISH or SUBSCRIBE packet...

CVE-2026-44639 NanoMQ: O(N²) Denial of Service in MQTT v5 Property Parsing

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's MQTT v5 property decoder in nng/src/supplemental/mqtt/mqttcodec.c uses propertyappend to walk the entire linked list for each property added by decodebufproperties. A remote unauthenticated client can supply a PUBLISH or SUBSCRIBE packet...

EUVD-2026-83047

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's MQTT v5 property decoder in nng/src/supplemental/mqtt/mqttcodec.c uses propertyappend to walk the entire linked list for each property added by decodebufproperties. A remote unauthenticated client can supply a PUBLISH or SUBSCRIBE packet...

CVE-2026-44639

NanoMQ , an MQTT broker, is vulnerable to an O(N²) denial of service in its MQTT v5 property decoder (in nng/src/supplemental/mqtt/mqtt_codec.c). The root cause is that property_append() traverses the entire linked list for each property added by decode_buf_properties(), resulting in quadratic CP...