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CVE-2026-21888
7.5 HIGH
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): HIGH
MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer()
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.
References
-
https://github.com/nanomq/nanomq/security/advisories/GHSA-cggc-6m7w-j7x5 x_refsource_CONFIRM
-
https://github.com/nanomq/nanomq/issues/2192 x_refsource_MISC
Affected products
nanomq
- ==<= 0.24.6
Package maintainers
-
@sikmir Nikolay Korotkiy <sikmir@disroot.org>