CVE-2026-70431: Jenkins Jenkins Multijob Plugin vulnerability
Jenkins Multijob Plugin 669.v9d96ad9c71b0 and earlier provides Groovy scripting features that do not integrate with Script Security Plugin, allowing attackers with Item/Create or Item/Configure permission to execute arbitrary code in the context of the Jenkins controller JVM.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
jenkinsci/jenkins-multijob-pluginto a version that resolves this vulnerability.Fixed in 669.v9d96a_d9c71b_0 - Compensating control
Restrict the Jenkins permissions Item/Create and Item/Configure so only trusted users can create or configure jobs, reducing the ability to exploit Groovy scripting features in the vulnerable Multijob Plugin versions.