CVE-2026-5089: YAML::Syck versions before 1.38 for Perl has an out-of-bounds read

Overview

Severity

High (CVSS 7.3)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-10-21

EPSS Score

0.42% (percentile: 35.3%)

Affected Products (1)

Other

• 0-17084

Revision History

• 2026-10-21: Information published.