Bump nokogiri from 1.19.3 to 1.19.4

[dependabot]

Bumps nokogiri from 1.19.3 to 1.19.4.

Release notes

Sourced from nokogiri's releases.

v1.19.4 / 2026-06-18

Security

• [CRuby] (Low) Fixed a possible invalid memory read when XML::Node#initialize_copy_with_args is called with an argument that is not a Node. See GHSA-g9g8-vgvw-g3vf for more information.
• [CRuby] (Low) Fixed a possible use-after-free when an XML::XPathContext is used after its source document has been garbage collected. See GHSA-p67v-3w7g-wjg7 for more information.
• [CRuby] (Low) Fixed a possible use-after-free during XInclude processing via Node#do_xinclude. See GHSA-wfpw-mmfh-qq69 for more information.
• [CRuby] (Low) Fixed a possible use-after-free when Document#root= is assigned a non-element node. See GHSA-wjv4-x9w8-wm3h for more information.
• [CRuby] (Low) Fixed a possible use-after-free when setting an attribute value via XML::Attr#value= or #content=. See GHSA-phwj-rprq-35pp for more information.
• [CRuby] (Low) Fixed a null pointer dereference when methods are called on uninitialized wrapper objects (e.g. via allocate); these now raise instead of crashing the process. See GHSA-9cv2-cfxc-v4v2 for more information.
• [CRuby] (Low) Fixed a possible use-after-free when Document#encoding= raises an exception. See GHSA-5v8h-3h3q-446p for more information.
• [CRuby] (Medium) Fixed an out-of-bounds read in XML::NodeSet#[] (alias #slice) when given a large negative index. See GHSA-5prr-v3j2-97mh for more information.
• [JRuby] (Low) XML::Schema now enforces the NONET parse option, which Nokogiri enables by default. It was not enforced on JRuby, so a schema parsed with default options could still fetch external resources over the network, potentially enabling SSRF or XXE attacks and bypassing the mitigation for CVE-2020-26247. See GHSA-8678-w3jw-xfc2 for more information.

1269fb644a6de405057a53dd5c762b1209b43ca7424f839454d3dbc677c31a8f  nokogiri-1.19.4-aarch64-linux-gnu.gem
35c65b9ce72b3bb03207bdbe7067915019dc18c1b9b59139684bd6690fdd01af  nokogiri-1.19.4-aarch64-linux-musl.gem
a301313e38bb065d68239e79734bcd6f56fb6efaacebde29e9abf2a4735340ca  nokogiri-1.19.4-arm-linux-gnu.gem
588923c101bcfa78869734d247d25b598674323e7f22474fc468f6e5647311eb  nokogiri-1.19.4-arm-linux-musl.gem
a46db9853286e6597b36ebc6953817d15acf3a299583eb3f89fdc6f91dd63527  nokogiri-1.19.4-arm64-darwin.gem
ce04b9e268c9626852231a48b49128ed52034f1ccb39484a6da3875491cd709e  nokogiri-1.19.4-java.gem
051da97b8eccfdb5444fed40246a35e10d7298b9efe759b4cd25455ea04c587e  nokogiri-1.19.4-x64-mingw-ucrt.gem
7fd17057d3e1f00e9954a74b3cd76595d3d4a5ef233b7ed9599047c204f70551  nokogiri-1.19.4-x86_64-darwin.gem
379fae440b28915e3f19d752ce2dcf8465ed2b2fbefd2a7ca0dd497bc981a06a  nokogiri-1.19.4-x86_64-linux-gnu.gem
17dfb7c1fa194ae02fbf7c51a7afc8d278045ab3fdacfd86f91d02d7b274470b  nokogiri-1.19.4-x86_64-linux-musl.gem
50c951611c92bca05c51411aef45f1cbc50f2821c4802758c5c6d34696533ab5  nokogiri-1.19.4.gem

Changelog

Sourced from nokogiri's changelog.

v1.19.4 / 2026-06-18

Security

• [CRuby] (Low) Fixed a possible invalid memory read when XML::Node#initialize_copy_with_args is called with an argument that is not a Node. See GHSA-g9g8-vgvw-g3vf for more information.
• [CRuby] (Low) Fixed a possible use-after-free when an XML::XPathContext is used after its source document has been garbage collected. See GHSA-p67v-3w7g-wjg7 for more information.
• [CRuby] (Low) Fixed a possible use-after-free during XInclude processing via Node#do_xinclude. See GHSA-wfpw-mmfh-qq69 for more information.
• [CRuby] (Low) Fixed a possible use-after-free when Document#root= is assigned a non-element node. See GHSA-wjv4-x9w8-wm3h for more information.
• [CRuby] (Low) Fixed a possible use-after-free when setting an attribute value via XML::Attr#value= or #content=. See GHSA-phwj-rprq-35pp for more information.
• [CRuby] (Low) Fixed a null pointer dereference when methods are called on uninitialized wrapper objects (e.g. via allocate); these now raise instead of crashing the process. See GHSA-9cv2-cfxc-v4v2 for more information.
• [CRuby] (Low) Fixed a possible use-after-free when Document#encoding= raises an exception. See GHSA-5v8h-3h3q-446p for more information.
• [CRuby] (Medium) Fixed an out-of-bounds read in XML::NodeSet#[] (alias #slice) when given a large negative index. See GHSA-5prr-v3j2-97mh for more information.
• [JRuby] (Low) XML::Schema now enforces the NONET parse option, which Nokogiri enables by default. It was not enforced on JRuby, so a schema parsed with default options could still fetch external resources over the network, potentially enabling SSRF or XXE attacks and bypassing the mitigation for CVE-2020-26247. See GHSA-8678-w3jw-xfc2 for more information.

Commits

• 8cfb9da version bump to v1.19.4
• a856d1e fix: JRuby NONET bypass in XML::Schema (v1.19.x) (#3639)
• 6a0aa1e fix(CRuby): use-after-free in Document#encoding= when setter raises (v1.19.x)...
• f658a54 fix: JRuby NONET bypass in XML::Schema
• 39d26fe fix(CRuby): use-after-free in Document#encoding= when setter raises
• 04a09dd fix(CRuby): out-of-bounds read in NodeSet#[] with large negative index (v1.19...
• 7799fbd fix: avoid NPE on uninitialized XML::Node structs (v1.19.x) (#3645)
• ef19e13 fix(CRuby): avoid UAF in XML::Attr#value= (v1.19.x) (#3644)
• 5524fa9 fix: Document#root= rejects non-element nodes (v1.19.x) (#3643)
• 9891ad1 fix(CRuby): use-after-free in XPathContext document lifetime (v1.19.x) (#3641)
• Additional commits viewable in compare view

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[whitby3001]

Copilot summary:

Review summary

I checked the nokogiri bump from 1.19.3 → 1.19.4 against both:

• the upstream changelog / release notes
• the actual upstream code changes in sparklemotion/nokogiri

and compared that with how hermod uses Nokogiri.

What changed upstream

1.19.4 is a security-focused patch release. The upstream diff is almost entirely fixes for memory-safety and parser-safety issues, including:

• XML::Node#initialize_copy_with_args type checking
• XML::XPathContext document lifetime fix
• Node#do_xinclude use-after-free fix
• Document#root= rejecting non-element nodes
• XML::Attr#value= use-after-free fix
• uninitialized wrapper object guards
• Document#encoding= safety fix
• XML::NodeSet#[] / #slice large negative index fix
• JRuby-only XML::Schema NONET enforcement fix

There are no broad API changes or normal feature changes in the release — this is essentially a patch/security release.

How this repo uses Nokogiri

In hermod, Nokogiri appears to be used only in test/support code, not as a runtime dependency:

• hermod.gemspec declares nokogiri as a development dependency: ~> 1.16
• the PR only updates Gemfile.lock
• usage in spec/minitest_helper.rb is limited to:
  • Nokogiri.XML(...)
  • remove_namespaces!
  • css(...)
  • reading node contents / attributes

This is a very small, conventional surface area and does not overlap with the upstream areas changed in 1.19.4 (XInclude, XPathContext lifetime edge cases, Document#root=, low-level attr mutation internals, large negative NodeSet indexing, JRuby schema NONET behavior, etc.).

Compatibility assessment

I don’t see any compatibility risk for this repo:

• the dependency constraint already allows this version (~> 1.16)
• the PR changes only the lockfile
• hermod’s Nokogiri usage is narrow and test-only
• none of the changed upstream code paths appear to be relied on here
• no behavioral change is expected for the way these specs parse and inspect XML

Risk notes

Only minor caveats:

• if this repo runs tests on JRuby, 1.19.4 does tighten XML::Schema NONET behavior — but I found no evidence this repo uses Nokogiri schema parsing at all
• if there were hidden tests depending on obscure buggy behavior in low-level Nokogiri internals, that could surface, but nothing in this codebase suggests that

Recommendation

Safe to merge.

This looks like a straightforward security patch upgrade with very low compatibility risk for hermod, and it improves the security posture of the development/test dependency without affecting runtime gem behavior.

[whitby3001]

Minor security version upgrade, so looks safe to merge.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud