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.

Apache Camel 2.6.x through 2.14.x, 2.15.x before 2.15.5, and 2.16.x before 2.16.1, when using (1) camel-jetty or (2) camel-servlet as a consumer in Camel routes, allow remote attackers to execute arbitrary commands via a crafted serialized Java object in an HTTP request.