CVE-2026-44640: Nanomq

Medium severity, CVSS 4.5. EPSS: 0.1% chance of exploitation in the next 30 days.

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to 0.24.14, aio->prov_data is stored as nni_quic_conn* during dialing, but read as ex_quic_conn* during dialer close. This type confusion causes invalid object interpretation and leads to close-path hang/crash behavior. This vulnerability is fixed in 0.24.14.

Affected products

• Nanomq Nanomq: before 0.24.14 (fixed in 0.24.14)

Published 2026-05-29. Last modified 2026-07-22.