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The HTTP/2 'Bomb' Flaw Hitting NGINX, Apache and Friends — And What To Actually Do About It

A newly discovered vulnerability in the HTTP/2 protocol, dubbed the "HTTP/2 Bomb," allows attackers to launch remote Denial-of-Service (DoS) attacks against widely used web servers and services, including NGINX, Apache, IIS, Envoy, and Cloudflare. The attack exploits weaknesses in how HTTP/2 handles certain requests, overwhelming servers with minimal effort from the attacker. Organizations are advised to take proactive steps to secure their systems against such vulnerabilities, particularly as AI is increasingly being used to discover and exploit security flaws.

3 Jun 2026