CVE-2026-44640 — MEDIUM (4.5)

Vulnerability 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.

CVSS Score

4.5

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Related Weaknesses (CWE)

CWE-843

References

FAQ

What is CVE-2026-44640?

CVE-2026-44640 is a vulnerability with a CVSS score of 4.5 (MEDIUM). 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 t...

How severe is CVE-2026-44640?

CVE-2026-44640 has been rated MEDIUM with a CVSS base score of 4.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-44640?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.