Quoting a message from firstname.lastname@example.org
VE-2017-5648 Apache Tomcat Information Disclosure
Vendor: The Apache Software Foundation
Apache Tomcat 9.0.0.M1 to 9.0.0.M17
Apache Tomcat 8.5.0 to 8.5.11
Apache Tomcat 8.0.0.RC1 to 8.0.41
Apache Tomcat 7.0.0 to 7.0.75
Apache Tomcat 6.0.x is not affected
While investigating bug 60718, it was noticed that some calls to
application listeners did not use the appropriate facade object. When
running an untrusted application under a SecurityManager, it was
therefore possible for that untrusted application to retain a reference
to the request or response object and thereby access and/or modify
information associated with another web application.
Users of the affected versions should apply one of the following
- Upgrade to Apache Tomcat 9.0.0.M18 or later
- Upgrade to Apache Tomcat 8.5.12 or later
- Upgrade to Apache Tomcat 8.0.42 or later
- Upgrade to Apache Tomcat 7.0.76 or later
This issue was identified by the Tomcat security team.
2017-04-10 Original advisory
It's a low security issue so I'll not backport on no longer or not released branches
All tests pass and UI seems OK.