CVE-2026-126064

Name	CVE-2026-126064
Description	Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.5, the CRuby native extension can leave Ruby wrappers pointing to freed memory when Nokogiri::XML::Node#[]= or Nokogiri::XML::Node#lang= replaces an existing attribute value after code has accessed the attribute's child nodes. Replacing the value frees native child nodes while their wrappers remain reachable, and later use of those wrappers can cause an invalid read or process segfault. JRuby is not affected. This issue is fixed in version 1.19.5.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ruby-nokogiri (PTS)	bookworm	1.13.10+dfsg-2	vulnerable
	trixie	1.18.2+dfsg-1	vulnerable
	forky	1.19.4+dfsg-1	vulnerable
	sid	1.19.7+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ruby-nokogiri	source	(unstable)	1.19.7+dfsg-1

Notes

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-3w22-6jfg-527w
Fixed by: https://github.com/sparklemotion/nokogiri/commit/feaed3c8c9bd9d81d064d4ca09b16044cd705d6f (v1.19.5)