GHSA-vvfq-8hwr-qm4m
Nokogiri updates packaged libxml2 to 2.13.6 to resolve CVE-2025-24928 and CVE-2024-56171
Blast Radius
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Description
Summary
Nokogiri v1.18.3 upgrades its dependency libxml2 to v2.13.6.
libxml2 v2.13.6 addresses:
- CVE-2025-24928
- described at https://gitlab.gnome.org/GNOME/libxml2/-/issues/847
- CVE-2024-56171
- described at https://gitlab.gnome.org/GNOME/libxml2/-/issues/828
Impact
CVE-2025-24928
Stack-buffer overflow is possible when reporting DTD validation errors if the input contains a long (~3kb) QName prefix.
CVE-2024-56171
Use-after-free is possible during validation against untrusted XML Schemas (.xsd) and, potentially, 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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | nokogiri | all versions | 1.18.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nokogiri. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update nokogiri to 1.18.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vvfq-8hwr-qm4m is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-vvfq-8hwr-qm4m is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-vvfq-8hwr-qm4m. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-vvfq-8hwr-qm4m in your dependencies?
O3 detects GHSA-vvfq-8hwr-qm4m across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.