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HIGHCVE-2026-32284Published Modified CNA Go

CVE-2026-32284: Denial of service in github.com/shamaton/msgpack

The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
—
Affected Products
3
Affected packages
  • github.com/shamaton/msgpack / github.com/shamaton/msgpack
  • github.com/shamaton/msgpack/v2 / github.com/shamaton/msgpack/v2
  • github.com/shamaton/msgpack/v3 / github.com/shamaton/msgpack/v3
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References