Sandbox projection in the Jenkins Script Security and Pipeline: Groovy Plugins could be circumvented through methods supporting type casts and type coercion. This allowed attackers to invoke constructors for arbitrary types.
"Any security advisory related updates to Jenkins core or the plugins we include in the OpenShift Jenkins master image will only occur in the v3.11 and v4.x branches of this repository."
This issue has been addressed in the following products:
Red Hat OpenShift Container Platform 3.11
Via RHSA-2019:1423 https://access.redhat.com/errata/RHSA-2019:1423