GHSA-6xxf-rwv4-mrjm is a medium-severity (CVSS 4.8) Cross-site Scripting (XSS) vulnerability in org.jenkins-ci.plugins:timestamper. O3 Security confirms whether GHSA-6xxf-rwv4-mrjm is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Stored XSS vulnerability in Jenkins Timestamper Plugin
Real-World Exposure
org.jenkins-ci.plugins:timestamperReal-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
Timestamper Plugin 1.11.1 and earlier does not escape or sanitize the HTML formatting used to display the timestamps in console output for builds.
This results in a stored cross-site scripting vulnerability that can be exploited by users with Overall/Administer permission.
Timestamper Plugin 1.11.2 sanitizes the HTML formatting for timestamps and only allows basic, safe HTML formatting.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.jenkins-ci.plugins:timestamper | all versions | 1.11.2 |
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:timestamper. 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:timestamper to 1.11.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6xxf-rwv4-mrjm 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-6xxf-rwv4-mrjm 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-6xxf-rwv4-mrjm. 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-6xxf-rwv4-mrjm in your dependencies?
O3 detects GHSA-6xxf-rwv4-mrjm across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.