GHSA-jcmg-9rw5-9rm2 — git-changelog
MEDIUMGHSA-jcmg-9rw5-9rm2 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in de.wellnerbou.jenkins:git-changelog. A fix is available for de.wellnerbou.jenkins:git-changelog — see the affected versions and patch details below.
Stored XSS vulnerability in Jenkins Git Changelog 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-jcmg-9rw5-9rm2 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 377,333 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
de.wellnerbou.jenkins:git-changelogReal-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
A cross-site scripting vulnerability exists in Jenkins Git Changelog Plugin 2.6 and earlier in GitChangelogSummaryDecorator/summary.jelly, GitChangelogLeftsideBuildDecorator/badge.jelly, GitLogJiraFilterPostPublisher/config.jelly, GitLogBasicChangelogPostPublisher/config.jelly that allows attackers able to control the Git history parsed by the plugin to have Jenkins render arbitrary HTML on some pages.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | de.wellnerbou.jenkins:git-changelog | all versions | 2.7de.wellnerbou.jenkins:git-changelog:2.7 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for de.wellnerbou.jenkins:git-changelog, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update de.wellnerbou.jenkins:git-changelog to 2.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-jcmg-9rw5-9rm2 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-jcmg-9rw5-9rm2 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-jcmg-9rw5-9rm2. 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-jcmg-9rw5-9rm2 in your dependencies?
O3 Security finds GHSA-jcmg-9rw5-9rm2 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.