🚨 [security] Update nokogiri 1.18.6 → 1.18.10 (patch)

[depfu]

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🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

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Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ nokogiri (1.18.6 → 1.18.10) · Repo · Changelog

Security Advisories 🚨

🚨 Nokogiri patches vendored libxml2 to resolve multiple CVEs

Summary

Nokogiri v1.18.9 patches the vendored libxml2 to address CVE-2025-6021, CVE-2025-6170, CVE-2025-49794, CVE-2025-49795, and CVE-2025-49796.

Impact and severity

CVE-2025-6021

A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.

NVD claims a severity of 7.5 High (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Fixed by applying https://gitlab.gnome.org/GNOME/libxml2/-/commit/17d950ae

CVE-2025-6170

A flaw was found in the interactive shell of the xmllint command-line tool, used for parsing XML files. When a user inputs an overly long command, the program does not check the input size properly, which can cause it to crash. This issue might allow attackers to run harmful code in rare configurations without modern protections.

NVD claims a severity of 2.5 Low (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)

Fixed by applying https://gitlab.gnome.org/GNOME/libxml2/-/commit/5e9ec5c1

CVE-2025-49794

A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.

NVD claims a severity of 9.1 Critical (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)

Fixed by applying https://gitlab.gnome.org/GNOME/libxml2/-/commit/81cef8c5

CVE-2025-49795

A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.

NVD claims a severity of 7.5 High (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Fixed by applying https://gitlab.gnome.org/GNOME/libxml2/-/commit/62048278

CVE-2025-49796

A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to sensitive data being corrupted in memory.

NVD claims a severity of 9.1 Critical (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)

Fixed by applying https://gitlab.gnome.org/GNOME/libxml2/-/commit/81cef8c5

Affected Versions

• Nokogiri < 1.18.9 when using CRuby (MRI) with vendored libxml2

Patched Versions

• Nokogiri >= 1.18.9

Mitigation

Upgrade to Nokogiri v1.18.9 or later.

Users who are unable to upgrade Nokogiri may also choose a more complicated mitigation: compile and link Nokogiri against patched external libxml2 libraries which will also address these same issues.

References

• #3526
• https://nvd.nist.gov/vuln/detail/CVE-2025-6021
• https://nvd.nist.gov/vuln/detail/CVE-2025-6170
• https://nvd.nist.gov/vuln/detail/CVE-2025-49794
• https://nvd.nist.gov/vuln/detail/CVE-2025-49795
• https://nvd.nist.gov/vuln/detail/CVE-2025-49796

🚨 Nokogiri updates packaged libxml2 to v2.13.8 to resolve CVE-2025-32414 and CVE-2025-32415

Summary

Nokogiri v1.18.8 upgrades its dependency libxml2 to v2.13.8.

libxml2 v2.13.8 addresses:

• CVE-2025-32414
  • described at https://gitlab.gnome.org/GNOME/libxml2/-/issues/889
• CVE-2025-32415
  • described at https://gitlab.gnome.org/GNOME/libxml2/-/issues/890

Impact

CVE-2025-32414: No impact

In libxml2 before 2.13.8 and 2.14.x before 2.14.2, out-of-bounds memory access can occur in the Python API (Python bindings) because of an incorrect return value. This occurs in xmlPythonFileRead and xmlPythonFileReadRaw because of a difference between bytes and characters.

There is no impact from this CVE for Nokogiri users.

CVE-2025-32415: Low impact

In libxml2 before 2.13.8 and 2.14.x before 2.14.2, xmlSchemaIDCFillNodeTables in xmlschemas.c has a heap-based buffer under-read. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.

In the upstream issue, further context is provided by the maintainer:

The bug affects validation against untrusted XML Schemas (.xsd) and validation of untrusted
documents against trusted Schemas if they make use of xsd:keyref in combination with recursively
defined types that have additional identity constraints.

MITRE has published a severity score of 2.9 LOW (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L) for this CVE.

Release Notes

1.18.10

v1.18.10 / 2025-09-15

Dependencies

• [CRuby] Vendored libxml2 is updated to v2.13.9. Note that the security fixes published in v2.13.9 were already present in Nokogiri v1.18.9.
• [CRuby] [Windows and MacOS] Vendored libiconv is updated to v1.18

sha256 checksums

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1.18.9

v1.18.9 / 2025-07-20

Security

• [CRuby] Applied upstream libxml2 patches to address CVE-2025-6021, CVE-2025-6170, CVE-2025-49794, CVE-2025-49795, and CVE-2025-49796. See GHSA-353f-x4gh-cqq8 for more information.

sha256 checksums

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1.18.8

v1.18.8 / 2025-04-21

Security

• [CRuby] Vendored libxml2 is updated to v2.13.8 to address CVE-2025-32414 and CVE-2025-32415. See GHSA-5w6v-399v-w3cc for more information.

sha256 checksums

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1.18.7

v1.18.7 / 2025-03-31

Dependencies

• [CRuby] Vendored libxml2 is updated to v2.13.7, which is a bugfix release.

sha256 checksums

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Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 21 commits:

• version bump to v1.18.10
• dep: bump vendored libxml2 to v2.13.9 (#3555)
• ci: work around repeated bundler deadlocks
• dep: bump vendored libxml2 to v2.13.9
• [v1.18.x] backport libiconv upgrade to v1.18 (#3550)
• dep: update vendored libiconv to 1.18
• Use mirror site to download libiconv
• ci: stop testing Ruby 3.1 windows source builds
• ci: fix the aarch64 segfault by using a more modern qemu
• Fix errors building Ruby 3.1 on windows
• Fix errors building Ruby 3.1 on macos 15
• version bump to v1.18.9
• Apply upstream patches to address multiple vulnerabilities (#3526)
• Apply upstream patches to address multiple vulnerabilities
• version bump to v1.18.8
• dep: libxml2 to v2.13.8 (branch `v1.18.x`) (#3509)
• dep: libxml2 to v2.13.8
• version bump to v1.18.7
• dep: bump libxml2 to 2.13.7 (v1.18.x backport) (#3495)
• dep: bump libxml2 to 2.13.7
• dep(dev): drop Rubocop from JRuby deps

↗️ mini_portile2 (indirect, 2.8.8 → 2.8.9) · Repo · Changelog

Release Notes

2.8.9

2.8.9 / 2025-05-12

Ruby support

• Import only what's needed from cgi, for supporting Ruby 3.5. #160 @Earlopain

New Contributors

• @kenhys made their first contribution in #156
• @Earlopain made their first contribution in #160

Full Changelog: v2.8.8...v2.8.9

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 13 commits:

• version bump to v2.8.9
• Merge pull request #160 from Earlopain/cgi-ruby-3.5
• Only load what is required from `cgi`
• Merge pull request #159 from flavorjones/flavorjones/ci-openbsd-202505
• ci: update ruby in the openbsd jobs
• Merge pull request #157 from flavorjones/flavorjones/fix-windows-cmake-tests
• ci: windows images no longer support older cmake versions
• Merge pull request #156 from kenhys/update-ci
• Add CI for Ruby 3.4
• Merge pull request #155 from flavorjones/flavorjones-ci-logger-fix
• dev: add logger to the Gemfile
• Merge pull request #154 from flavorjones/flavorjones-ci-fix-test-examples-macos-libiconv
• ci: brew install libiconv for test-examples on macos

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