apache tomcat is vulnerable to information disclosure. The HTTP headers within a request can potentially be included in a subsequent request and reveal confidential information, when the agreed maximum number of concurrent streams for a connection is exceeded.
lists.opensuse.org/opensuse-security-announce/2020-11/msg00002.html
lists.opensuse.org/opensuse-security-announce/2020-11/msg00021.html
tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.0.0-M8
tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.58
tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.38
lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E
lists.debian.org/debian-lts-announce/2020/10/msg00019.html
security.netapp.com/advisory/ntap-20201016-0007/
www.debian.org/security/2021/dsa-4835
www.oracle.com/security-alerts/cpuApr2021.html