CVE-2026-92127 Jenkins Project CVE debrief

Who should care

Jenkins administrators and users with Overall/Administer permission should assess exposure and take action to prevent exploitation. This includes verifying and updating the Script Security Plugin, assessing the current configuration for potential vulnerabilities, and implementing compensating controls where necessary. Security teams and platform administrators should also review the vulnerability and its potential impact on their environments.

Why it matters

CVE-2026-92127 allows attackers to execute arbitrary code in the context of the Jenkins controller JVM, requiring verification and updates to Jenkins Script Security Plugin.

• Attackers may execute arbitrary code in the context of the Jenkins controller JVM
• Verify and update Jenkins Script Security Plugin to a secure version
• Assess exposure and implement compensating controls

Technical summary

The Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier automatically approves classpath entries in an item configuration when a user with Overall/Administer permission copies the item or updates that configuration through the REST API or CLI, allowing attackers to execute arbitrary code in the context of the Jenkins controller JVM. This highlights the need for verification and updates to the plugin to prevent exploitation. The vulnerability is specific to the plugin's handling of classpath entries in item configurations.

Defensive priority

Jenkins administrators should verify and update Script Security Plugin versions, assess exposure, and implement compensating controls.

Recommended defensive actions

• Verify and update Jenkins Script Security Plugin to a secure version
• Assess exposure and implement compensating controls
• Monitor for suspicious activity
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• 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

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier. The vulnerability allows attackers to execute arbitrary code in the context of the Jenkins controller JVM. Evidence is limited to CVE and NVD entries; further verification is recommended. No additional affected scope or exploitation claims are confirmed.

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.