TL;DR: CVE-2026-49975, dubbed the “HTTP/2 Bomb,” is a critical remote Denial-of-Service (DoS) vulnerability affecting default HTTP/2 configurations of major web servers including NGINX, Apache HTTPD, Microsoft IIS, Envoy, and Cloudflare Pingora. Discovered by security firm Calif using OpenAI’s Codex, the attack combines a unique HPACK compression bomb variant with a ... Read More

Overview On December 3, 2025, the React and Next.js teams disclosed a critical security vulnerability (CVSS 10.0), identified as React2Shell, affecting applications that leverage React Server Components together with Server Actions or Server Functions. The React2Shell vulnerability stems from improper validation of client-supplied data within certain server-side React features. An ... Read More

Introduction HTTP/2 was designed for performance- faster multiplexed connections, stream prioritization, and header compression. But these same features have also opened the door for sophisticated denial-of-service attacks. Back in 2023, the HTTP/2 Rapid Reset vulnerability made headlines after attackers exploited the protocol’s stream cancellation mechanism to crash large-scale services. Now, ... Read More