GHSA-q234-x887-9rxh
MEDIUMGHSA-q234-x887-9rxh is a medium-severity (CVSS 6.5) CWE-59 vulnerability in org.jenkins-ci.plugins.workflow:workflow-cps-global-lib. O3 Security confirms whether GHSA-q234-x887-9rxh is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Improper Link Resolution Before File Access in Jenkins Pipeline: Shared Groovy Libraries Plugin
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-q234-x887-9rxh plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 0 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
org.jenkins-ci.plugins.workflow:workflow-cps-global-lib☕org.jenkins-ci.plugins.workflow:workflow-cps-global-lib☕org.jenkins-ci.plugins.workflow:workflow-cps-global-libReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Jenkins Pipeline: Shared Groovy Libraries Plugin 552.vd9cc05b8a2e1 and earlier follows symbolic links to locations outside of the expected Pipeline library when reading files using the libraryResource step, allowing attackers able to configure Pipelines to read arbitrary files on the Jenkins controller file system.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.jenkins-ci.plugins.workflow:workflow-cps-global-lib | ≥ 2.22&&< 561.va_ce0de3c2d69 | 561.va_ce0de3c2d69 |
| ☕Maven | org.jenkins-ci.plugins.workflow:workflow-cps-global-lib | ≥ 2.19&&< 2.21.1 | 2.21.1 |
| ☕Maven | org.jenkins-ci.plugins.workflow:workflow-cps-global-lib | all versions | 2.18.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins.workflow:workflow-cps-global-lib. 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 org.jenkins-ci.plugins.workflow:workflow-cps-global-lib to 561.va_ce0de3c2d69 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q234-x887-9rxh 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-q234-x887-9rxh 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-q234-x887-9rxh. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
Frequently Asked Questions
Is GHSA-q234-x887-9rxh in your dependencies?
O3 detects GHSA-q234-x887-9rxh across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.