GHSA-gx8x-g87m-h5q6
HIGHDenial of Service (DoS) in Nokogiri on JRuby
Blast Radius
nokogiriReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
Summary
Nokogiri v1.13.4 updates the vendored org.cyberneko.html library to 1.9.22.noko2 which addresses CVE-2022-24839. That CVE is rated 7.5 (High Severity).
See GHSA-9849-p7jc-9rmv for more information.
Please note that this advisory only applies to the JRuby implementation of Nokogiri < 1.13.4.
Mitigation
Upgrade to Nokogiri >= 1.13.4.
Impact
CVE-2022-24839 in nekohtml
- Severity: High 7.5
- Type: CWE-400 Uncontrolled Resource Consumption
- Description: The fork of
org.cyberneko.htmlused by Nokogiri (Rubygem) raises ajava.lang.OutOfMemoryErrorexception when parsing ill-formed HTML markup. - See also: GHSA-9849-p7jc-9rmv
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | nokogiri | all versions | 1.13.4 |
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 1.13.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-gx8x-g87m-h5q6 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-gx8x-g87m-h5q6 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-gx8x-g87m-h5q6. 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-gx8x-g87m-h5q6 in your dependencies?
O3 detects GHSA-gx8x-g87m-h5q6 across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.