CVE-2026-57436: Nokogiri: Possible Use-After-Free when setting `Document#root=` to an invalid node type

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-27

Last Updated

2026-06-30

EPSS Score

0.40% (percentile: 31.8%)

Affected Products (1)

Other

• 21473-17084

Revision History

• 2026-06-27: Information published.
• 2026-06-29: Information published.
• 2026-06-30: Information published.