Apache Tomcat versions prior to 9.0.12, 8.5.34, and 7.0.91 are prone to an open-redirection vulnerability because it fails to properly sanitize user-supplied input.
View the template here CVE-2018-11784.yaml
References:
http://packetstormsecurity.com/files/163456/Apache-Tomcat-9.0.0M1-Open-Redirect.html