CVE-2026-32284

HIGH

7.5

Description

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/26/2026

Last Modified3/30/2026

Sourcenvd

Honeypot Sightings0

References

https://github.com/golang/vulndb/issues/4513(security@golang.org)

https://github.com/shamaton/msgpack/issues/59(security@golang.org)

https://pkg.go.dev/vuln/GO-2026-4513(security@golang.org)

https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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