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

EPSS Score

0.31% (percentile: 23.0%)

Affected Products (1)

Other

• 21473-17084

Revision History

• 2026-06-27: Information published.