CVE-2026-44640

Description

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.

PUBLISHED Reserved 2026-05-07 | Published 2026-05-29 | Updated 2026-05-29 | Assigner GitHub_M

Problem types

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

Product status

References

github.com/...nanomq/security/advisories/GHSA-9fgw-v323-jmjj exploit

github.com/...nanomq/security/advisories/GHSA-9fgw-v323-jmjj

github.com/nanomq/nanomq/releases/tag/0.24.14

cve.org (CVE-2026-44640)

nvd.nist.gov (CVE-2026-44640)

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