A sandbox bypass vulnerability in Jenkins Script Security Plugin 1.61 and earlier related to the handling of type casts allowed attackers to execute arbitrary code in sandboxed scripts.
https://access.redhat.com/errata/RHSA-2019:2662
https://access.redhat.com/errata/RHSA-2019:2651
https://access.redhat.com/errata/RHSA-2019:2594
http://www.openwall.com/lists/oss-security/2019/07/31/1