CVE-2026-92124 Jenkins Project CVE debrief

Who should care

Jenkins administrators and users with permission to define and run sandboxed scripts, including Pipelines, should verify their plugin version and apply the patch if necessary to prevent exploitation.

Why it matters

CVE-2026-92124 is a high-severity vulnerability in the Jenkins Script Security Plugin that allows for code execution in the context of the Jenkins controller JVM. Defenders should prioritize verifying exposure and applying the vendor-provided patch to prevent exploitation.

• Code execution in the context of the Jenkins controller JVM
• Bypassing of sandbox protection
• Potential for privilege escalation

Technical summary

The Jenkins Script Security Plugin incorrectly checks the operations Groovy will perform with the elements it reads from a collection that a sandboxed script casts to another type, allowing attackers with permission to define and run sandboxed scripts, including Pipelines, to bypass the sandbox protection and execute arbitrary code in the context of the Jenkins controller JVM. This issue affects Jenkins Script Security Plugin versions up to 1415.v9a_f9b_3a_c253d, and defenders should prioritize verifying exposure and applying the vendor-provided patch to prevent exploitation.

Defensive priority

Defenders should prioritize verifying exposure and applying the vendor-provided patch, as this vulnerability allows for code execution in the context of the Jenkins controller JVM.

Recommended defensive actions

• Verify the Jenkins Script Security Plugin version and apply the patch if necessary
• Restrict access to the Jenkins controller JVM to prevent exploitation
• Monitor Jenkins controller JVM logs for suspicious activity
• 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 vulnerability detail page provide information on the vulnerability, including its description, CVSS score, and affected versions. Defenders should verify exposure by checking Jenkins Script Security Plugin versions and review logs for suspicious activity related to Groovy script execution. The NVD page also offers additional context on the vulnerability's impact.

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.