CSRF tokens in Jenkins 2.185 and earlier, LTS 2.176.1 and earlier did not expire, thereby allowing attackers able to obtain them to bypass CSRF protection.
https://jenkins.io/security/advisory/2019-07-17/#SECURITY-626
https://access.redhat.com/errata/RHSA-2019:2548
https://access.redhat.com/errata/RHSA-2019:2503