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CVE-2026-21888

MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer() PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
nanomq / nanomqaffected <= 0.24.6

CWE

CWE-125

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.