GHSA-pxvg-2qj5-37jq CVE-2023-54354

Nokogiri updates packaged libxml2 to v2.10.4 to resolve multiple CVEs

Medium RubyGems

Severity: Medium; The publisher's own rating, not a CVSS score
Exploit chance (EPSS): —; No score published
Known exploited: No; Not in CISA's catalog
Weakness: —; Not classified
Fix: 1.14.3; Upgrade nokogiri to this version or later

Description

Summary

Nokogiri v1.14.3 upgrades the packaged version of its dependency libxml2 to v2.10.4 from v2.10.3.

libxml2 v2.10.4 addresses the following known vulnerabilities:

CVE-2023-29469: Hashing of empty dict strings isn't deterministic
CVE-2023-28484: Fix null deref in xmlSchemaFixupComplexType
Schemas: Fix null-pointer-deref in xmlSchemaCheckCOSSTDerivedOK

Please note that this advisory only applies to the CRuby implementation of Nokogiri < 1.14.3, and only if the packaged libraries are being used. If you've overridden defaults at installation time to use system libraries instead of packaged libraries, you should instead pay attention to your distro's libxml2 release announcements.

Mitigation

Upgrade to Nokogiri >= 1.14.3.

Users who are unable to upgrade Nokogiri may also choose a more complicated mitigation: compile and link Nokogiri against external libraries libxml2 >= 2.10.4 which will also address these same issues.

Impact

No public information has yet been published about the security-related issues other than the upstream commits. Examination of those changesets indicate that the more serious issues relate to libxml2 dereferencing NULL pointers and potentially segfaulting while parsing untrusted inputs.

The commits can be examined at:

Affected versions

RubyGems

Package	Vulnerable	Fixed in
nokogiri	`< 1.14.3`	`1.14.3`

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

nokogiri RubyGems → `1.14.3`

bundler

bundle update nokogiri # Gemfile: gem "nokogiri", ">= 1.14.3"

References

Packages

github.com/sparklemotion/nokogiri

Timeline

Apr 11, 2023 Published
Sep 8, 2026 Last updated by the source

Advisory	Severity	Why it's related
GHSA-phwj-rprq-35pp Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`	High	Also affects nokogiri
GHSA-wfpw-mmfh-qq69 Nokogiri: Possible Use-After-Free in XInclude Processing	Low	Also affects nokogiri
GHSA-p67v-3w7g-wjg7 Nokogiri: Possible Use-After-Free when directly using `NokogirI::XML::XPathContext` beyond document lifetime	Medium	Also affects nokogiri
GHSA-wjv4-x9w8-wm3h Nokogiri: Possible Use-After-Free when setting `Document#root=` to an invalid node type	Medium	Also affects nokogiri
GHSA-5prr-v3j2-97mh Nokogiri: Possible Out-of-Bounds Read in `Nokogiri::XML::NodeSet#[]`	High	Also affects nokogiri
GHSA-9cv2-cfxc-v4v2 Nokogiri: Null Pointer Dereference calling methods on uninitialized wrapper classes	High	Also affects nokogiri
GHSA-8678-w3jw-xfc2 Nokogiri: XML::Schema on JRuby allows network requests when NONET is set, bypassing CVE-2020-26247	Low	Also affects nokogiri
GHSA-5v8h-3h3q-446p Nokogiri: Possible Use-After-Free when `Nokogiri::XML::Document#encoding=` raises an exception	High	Also affects nokogiri

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