GHSA-f8w9-66fp-3jgw — build-metrics
MEDIUMGHSA-f8w9-66fp-3jgw is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in org.jenkins-ci.plugins:build-metrics. 3 public exploit references exist, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.
Jenkins build-metrics Plugin reflected cross-site scripting vulnerability
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-f8w9-66fp-3jgw 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 377,166 CVEs with a current EPSS score, this one falls in the 50–90% 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:build-metricsReal-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 build-metrics Plugin does not properly escape the label query parameter, resulting in a reflected cross-site scripting vulnerability.
As of publication of this advisory, there is no fix.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.jenkins-ci.plugins:build-metrics | all versions | No fix |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Jenkins build-metrics plugin 1.3 - 'label' Cross-Site Scripting
by vesche · Nov 8, 2019
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:build-metrics, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of org.jenkins-ci.plugins:build-metrics has shipped for GHSA-f8w9-66fp-3jgw yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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-f8w9-66fp-3jgw can be triaged on real exposure rather than presence alone.
Tailored to GHSA-f8w9-66fp-3jgw. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-f8w9-66fp-3jgw
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-f8w9-66fp-3jgw -u https://target- Template
- Jenkins build-metrics 1.3 - Cross-Site Scripting
- Severity
- medium
- Impact
- Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the victim's browser, leading to potential data theft or unauthorized actions.
- Remediation
- Upgrade to a patched version of the Jenkins build-metrics plugin or apply the necessary fixes provided by the vendor.
Template by ProjectDiscovery nuclei-templates (madrobot), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-f8w9-66fp-3jgw in your dependencies?
O3 Security finds GHSA-f8w9-66fp-3jgw across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.