CVE-2026-107296: msgpack5: Decoding negative int64 values mutates the input buffer

Overview

Severity

Low (CVSS 3.7)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Oct

Released

2026-10-10

EPSS Score

0.28% (percentile: 18.4%)

Affected Products (1)

Other

• 21665-17084

Revision History

• 2026-10-10: Information published.