Express: JavaScript for node.js web frameworks

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v4.22.22026-05-11fix: restore >20 array parsing for req.query repeated keys (8d09bfe6)
v5.2.12025-12-01> [!IMPORTANT]
v5.2.02025-12-01Security fix for CVE-2024-51999 (GHSA-pj86-cfqh-vqx6)
v4.22.12025-12-01> [!IMPORTANT]
4.22.02025-12-01Security fix for CVE-2024-51999 (GHSA-pj86-cfqh-vqx6)

unsigned The latest release, v5.2.1, carries no signature GitHub could verify.

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Fast and low overhead web framework, for Node.js

Schema-based validation and serialisation, and a plugin system.

Web framework built on Web Standards

Built on Web Standards, runs on Node.js, Deno, Bun and edge runtimes.