The host is installed with Node.js 18.x before 18.20.1, 20.x before 20.12.1, or 21.x before 21.7.2 and is prone to a denial of service vulnerability. A flaw is present in the application which fails to handle nghttp2 memory. Successful exploitation could allow an attacker to make the Node.js HTTP/2 server completely unavailable by sending a small amount of HTTP/2 frames packets with a few HTTP/2 frames inside.