In Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 a malicious web application was able to bypass a configured SecurityManager via a Tomcat utility method that was accessible to web applications.
http://packetstormsecurity.com/files/155873/Tomcat-9.0.0.M1-Sandbox-Escape.html
http://rhn.redhat.com/errata/RHSA-2017-0457.html
http://rhn.redhat.com/errata/RHSA-2017-1551.html
https://access.redhat.com/errata/RHSA-2017:0455
https://access.redhat.com/errata/RHSA-2017:0456
https://access.redhat.com/errata/RHSA-2017:1548
https://access.redhat.com/errata/RHSA-2017:1549
https://access.redhat.com/errata/RHSA-2017:1550
https://access.redhat.com/errata/RHSA-2017:1552
https://access.redhat.com/errata/RHSA-2017:2247
https://security.netapp.com/advisory/ntap-20180605-0001/
https://usn.ubuntu.com/4557-1/