Vulnerability · Published May 29, 2026 · Assigned by GitHub_M
CVE-2026-44640NanoMQ: QUIC Dialer Close Type Confusion
Medium 4.5
In plain English
A medium-severity type confusion in nanomq from nanomq. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.1)4.5Medium
Exploit odds (30 days)<0.1%top 99.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-843 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
References
- https://github.com/nanomq/nanomq/security/advisories/GHSA-9fgw-v323-jmjj x_refsource_CONFIRM
- https://github.com/nanomq/nanomq/releases/tag/0.24.14 x_refsource_MISC