GHSA-gx8x-g87m-h5q6 is a high-severity (CVSS 7.5) vulnerability in nokogiri. A fix is available for nokogiri — see the affected versions and patch details below.
Denial of Service (DoS) in Nokogiri on JRuby
Real-World Exposure
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 | 1.13.4bundle update nokogiri --conservative |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nokogiri, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-gx8x-g87m-h5q6 can be triaged on real exposure rather than presence alone.
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 Security finds GHSA-gx8x-g87m-h5q6 across RubyGems dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.