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.

A vulnerability in Cisco AMP Threat Grid could allow an authenticated, remote attacker to access sensitive information. The vulnerability is due to unsafe creation of API keys. An attacker could exploit this vulnerability by using insecure credentials to gain unauthorized access to the affected device. An exploit could allow the attacker to gain unauthorized access to information by using the API key credentials.

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service.