Summary
Denial of Service (DoS) in Nokogiri on JRuby
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.
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
Impact
Crafted input forces the application to consume excessive CPU, memory, or other resources, degrading or denying service. Typical impact: denial of service.
GHSA-GX8X-G87M-H5Q6 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.13.4); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is GHSA-GX8X-G87M-H5Q6? GHSA-GX8X-G87M-H5Q6 is a high-severity uncontrolled resource consumption vulnerability in nokogiri (rubygems), affecting versions < 1.13.4. It is fixed in 1.13.4. Crafted input forces the application to consume excessive CPU, memory, or other resources, degrading or denying service.
- How severe is GHSA-GX8X-G87M-H5Q6? GHSA-GX8X-G87M-H5Q6 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of nokogiri are affected by GHSA-GX8X-G87M-H5Q6? nokogiri (rubygems) versions < 1.13.4 is affected.
- Is there a fix for GHSA-GX8X-G87M-H5Q6? Yes. GHSA-GX8X-G87M-H5Q6 is fixed in 1.13.4. Upgrade to this version or later.
- Is GHSA-GX8X-G87M-H5Q6 exploitable, and should I be worried? Whether GHSA-GX8X-G87M-H5Q6 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-GX8X-G87M-H5Q6 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-GX8X-G87M-H5Q6? Upgrade
nokogirito 1.13.4 or later.