CVE-2026-21888

HIGH

7.5

Description

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer() accepts 5-byte varints without bounds checks; reliably triggers OOB read / crash when built with ASan. This affects 0.24.6 and earlier.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/11/2026

Derniere modification3/17/2026

Sourcenvd

Observations honeypot0

Produits affectes

emqx:nanomq

Faiblesses (CWE)

CWE-125

References

https://github.com/nanomq/nanomq/issues/2192(security-advisories@github.com)

https://github.com/nanomq/nanomq/security/advisories/GHSA-cggc-6m7w-j7x5(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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