An information disclosure issue was discovered in Apache Tomcat 8.5.7 to 8.5.9 and 9.0.0.M11 to 9.0.0.M15 in reverse-proxy configurations. Http11InputBuffer.java allows remote attackers to read data that was intended to be associated with a different request.
https://security.netapp.com/advisory/ntap-20180614-0002/
http://www.securityfocus.com/bid/96895
http://tomcat.apache.org/security-9.html
http://tomcat.apache.org/security-8.html