CVE-2026-57585: MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-07-03

EPSS Score

0.28% (percentile: 19.7%)

Affected Products (1)

Other

• 21546-17084

Revision History

• 2026-07-03: Information published.