CVE-2026-57234

Name	CVE-2026-57234
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1140769

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ruby-nokogiri (PTS)	bullseye	1.11.1+dfsg-2	fixed
	bullseye (security)	1.11.1+dfsg-2+deb11u1	fixed
	bookworm	1.13.10+dfsg-2	fixed
	trixie	1.18.2+dfsg-1	vulnerable
	forky, sid	1.19.4+dfsg-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
ruby-nokogiri	source	bullseye	(not affected)
ruby-nokogiri	source	bookworm	(not affected)
ruby-nokogiri	source	(unstable)	1.19.4+dfsg-1	1140769

Notes

[trixie] - ruby-nokogiri <no-dsa> (Minor issue)
[bookworm] - ruby-nokogiri <not-affected> (JRuby-only; Debian builds/uses the CRuby implementation)
[bullseye] - ruby-nokogiri <not-affected> (JRuby-only; Debian builds/uses the CRuby implementation)
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-8678-w3jw-xfc2