CVE-2026-57234: Nokogiri

Low severity, CVSS 2.6. EPSS: 0.2% chance of exploitation in the next 30 days.

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema (see CVE-2020-26247), was not correctly enforced on the JRuby implementation. As a result, a schema parsed with default options could still cause external resources to be fetched over the network, potentially enabling SSRF or XXE attacks. This vulnerability is fixed in 1.19.4.

Affected products

• Nokogiri Nokogiri: before 1.19.4 (fixed in 1.19.4)

Published 2026-06-25. Last modified 2026-06-26.