CVE-2026-92134 Jenkins Project CVE debrief

Who should care

Defenders responsible for Jenkins deployments, particularly those with Item/Configure permissions, should assess exposure and verify the plugin version. Security teams and vulnerability management teams should also review this vulnerability and implement necessary mitigations. Additionally, operators and administrators of Jenkins instances should be aware of the potential risks and take steps to protect their environments.

Why it matters

CVE-2026-92134 is a stored XSS vulnerability in Jenkins Warnings Plugin that allows attackers to inject malicious JavaScript code. Defenders should verify the plugin version, restrict permissions, and monitor for suspicious activity.

• Potential for malicious JavaScript code injection
• Possible exploitation by attackers with Item/Configure permissions
• Need for verification of plugin version and permissions

Technical summary

The Jenkins Warnings Plugin does not validate the analysis results ID when a job configuration is submitted through the REST API, allowing attackers with Item/Configure permission to inject malicious JavaScript code. This vulnerability results from inadequate input validation and sanitization of user-supplied data. Defenders should prioritize verifying the plugin version and restricting Item/Configure permissions to trusted users, while also monitoring for suspicious activity and implementing compensating controls.

Defensive priority

Defenders should prioritize verifying the plugin version and restricting Item/Configure permissions to trusted users.

Recommended defensive actions

• Verify the Jenkins Warnings Plugin version and update to a patched version if necessary
• Restrict Item/Configure permissions to trusted users
• Monitor for suspicious activity and implement compensating controls
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional verification is required to confirm affected versions and remediation steps. The Jenkins security advisory and plugin documentation should be consulted for specific version information and upgrade guidance. Defenders should verify plugin versions, assess exposure, and implement compensating controls as needed.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.