CVE-2026-84658 Jenkins Project CVE debrief

Who should care

Defenders responsible for Jenkins deployments, particularly those using Script Security Plugin, should assess exposure and verify remediation.

Why it matters

CVE-2026-84658 allows attackers to read script approval configuration in Jenkins Script Security Plugin. Defenders should verify exposure, prioritize remediation, and monitor for potential unauthorized access.

• Verify exposure of script approval configuration
• Assess potential unauthorized access to sensitive information
• Prioritize remediation for affected plugin versions
• Monitor for suspicious activity related to script approval configuration

Technical summary

The Jenkins Script Security Plugin uses the `@DataBoundConstructor` annotation on a constructor that loads script approval configuration. This allows attackers able to submit certain forms to read that configuration. The vulnerability affects Jenkins Script Security Plugin versions up to 1412.v7737b_3405f86. Defenders should prioritize verifying exposure and remediation for affected plugin versions.

Defensive priority

Defenders should prioritize verifying exposure and remediation for Jenkins Script Security Plugin versions up to 1412.v7737b_3405f86.

Recommended defensive actions

• Verify Jenkins Script Security Plugin version and check for exposure
• Review and apply vendor remediation if available
• Monitor for potential unauthorized access to script approval configuration

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in Jenkins Script Security Plugin. The vendor advisory from Jenkins Project offers additional context.

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.