The index page of the Manager and Host Manager applications included a valid CSRF token when issuing a redirect as a result of an unauthenticated request to the root of the web application. This token could then be used by an attacker to construct a CSRF attack. Apache Tomcat versions 7.0.1 through 7.0.67, 8.0.0.RC1 through 8.0.31, and 9.0.0.M1 are affected.