Muhammad Asad.
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Backend & APIs

Node.js

Latestv26.3.1Updated Jun 18, 2026

Overview

Node.js is a cross-platform, open-source JavaScript runtime environment that can run on Windows, Linux, Unix, macOS, and more. Node.js runs on the V8 JavaScript engine, and executes JavaScript code outside a web browser. According to the Stack Overflow Developer Survey, Node.js is one of the most commonly used web technologies.

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How it works

js
const http = require("http");

http.createServer((req, res) => {
    res.end("Hello, World!");
}).listen(3000);

The flow

Step by step, from source to running.

  1. 1JS enters the V8 engine
  2. 2Event loop schedules async work
  3. 3libuv handles I/O off-thread
  4. 4Non-blocking response returned

Latest changes

v26.3.1 · Jun 18, 2026

  • (CVE-2026-48618) tls: normalize hostname for server identity checks (Matteo Collina) – High
  • (CVE-2026-48933) crypto: guard WebCrypto cipher output length (Filip Skokan) – High
  • (CVE-2026-48615) lib,test: redact proxy credentials in tunnel errors (Matteo Collina) – Medium
  • (CVE-2026-48619) http2: cap originSet size to prevent unbounded memory growth (Matteo Collina) – Medium
  • (CVE-2026-48928) tls: fix case-sensitive SNI context matching (Matteo Collina) – Medium

Links

WebsiteDocumentationSource code

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