MDR

TL;DR HTTP2Shell (CVE-2026-111497) is an out-of-bounds write in Google's Brotli decoder, versions 1.0.3 through 1.2.0. An unauthenticated attacker who gets crafted Brotli data into a vulnerable decoder can crash the process, read its memory, or in some cases run code. It was first reported as a Node.js bug ("Node2Shell"), but the flaw is in the…