Access Restriction Bypass
Affecting org.apache.tomcat:tomcat-catalina artifact, versions [7.0.0,7.0.85) || [8.0.0.RC1,8.0.50) || [8.5.0,8.5.28) || [9.0.0.M1,9.0.5)
org.apache.tomcat:tomcat-catalina is a Tomcat Servlet Engine Core Classes and Standard implementations.
Affected versions of this package are vulnerable to Access Restriction Bypass. The URL pattern of (the empty string) which exactly maps to the context root was not correctly handled, this caused the constraint to be ignored. It was, therefore, possible for unauthorised users to gain access to web application resources that should have been protected. Only security constraints with a URL pattern of the empty string were affected.
org.apache.tomcat:tomcat-catalina to version 7.0.85, 8.0.50, 8.5.28, 9.0.5 or higher.