A flaw in Node.js HTTP Agent can cause a client to accept as valid a response that is send before the client has sent the request. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
https://nodejs.org/en/blog/vulnerability/june-2026-security-releases
https://jdstaerk.substack.com/p/nodejs-security-fix-silently-broke