When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "tomcat9": "9.0.16-3ubuntu0.18.04.2", "tomcat9-user": "9.0.16-3ubuntu0.18.04.2", "libtomcat9-embed-java": "9.0.16-3ubuntu0.18.04.2", "tomcat9-docs": "9.0.16-3ubuntu0.18.04.2", "libtomcat9-java": "9.0.16-3ubuntu0.18.04.2", "tomcat9-examples": "9.0.16-3ubuntu0.18.04.2", "tomcat9-common": "9.0.16-3ubuntu0.18.04.2", "tomcat9-admin": "9.0.16-3ubuntu0.18.04.2" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "tomcat8-common": "8.5.39-1ubuntu1~18.04.3+esm2", "tomcat8-admin": "8.5.39-1ubuntu1~18.04.3+esm2", "tomcat8-user": "8.5.39-1ubuntu1~18.04.3+esm2", "libtomcat8-java": "8.5.39-1ubuntu1~18.04.3+esm2", "tomcat8": "8.5.39-1ubuntu1~18.04.3+esm2", "tomcat8-examples": "8.5.39-1ubuntu1~18.04.3+esm2", "libtomcat8-embed-java": "8.5.39-1ubuntu1~18.04.3+esm2", "tomcat8-docs": "8.5.39-1ubuntu1~18.04.3+esm2" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "tomcat9": "9.0.31-1ubuntu0.2", "tomcat9-user": "9.0.31-1ubuntu0.2", "libtomcat9-embed-java": "9.0.31-1ubuntu0.2", "tomcat9-docs": "9.0.31-1ubuntu0.2", "libtomcat9-java": "9.0.31-1ubuntu0.2", "tomcat9-examples": "9.0.31-1ubuntu0.2", "tomcat9-common": "9.0.31-1ubuntu0.2", "tomcat9-admin": "9.0.31-1ubuntu0.2" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "tomcat9": "9.0.43-3", "tomcat9-user": "9.0.43-3", "libtomcat9-embed-java": "9.0.43-3", "tomcat9-docs": "9.0.43-3", "libtomcat9-java": "9.0.43-3", "tomcat9-examples": "9.0.43-3", "tomcat9-common": "9.0.43-3", "tomcat9-admin": "9.0.43-3" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "tomcat9": "9.0.70-1ubuntu1", "tomcat9-user": "9.0.70-1ubuntu1", "libtomcat9-embed-java": "9.0.70-1ubuntu1", "tomcat9-docs": "9.0.70-1ubuntu1", "libtomcat9-java": "9.0.70-1ubuntu1", "tomcat9-examples": "9.0.70-1ubuntu1", "tomcat9-common": "9.0.70-1ubuntu1", "tomcat9-admin": "9.0.70-1ubuntu1" } ] }