The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
{ "cpes": [ "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone10:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone11:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone1:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone2:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone3:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone4:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone5:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone6:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone7:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone8:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:11.0.0:milestone9:*:*:*:*:*:*" ], "severity": "High" }