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res.set('Content-Type') silently sets header to literal string 'false' for unknown types

discuss

Status: Open.

#7034 In expressjs/express;

·veeceey openedon Feb 14, 2026

Standardize on error codes for errors express throws

6.x

ideas

Status: Open.

#6951 In expressjs/express;

·jonchurch openedon Dec 12, 2025

res.redirect(undefined) sends invalid Location: undefined header

6.x

deprecate

Status: Open.

Bug

#6941 In expressjs/express;

·BOXER78 openedon Dec 3, 2025

I am unable to set cookies in vercel app for my application. While my backend is deployed in render.

awaiting more info

Status: Open.

#6926 In expressjs/express;

·rajgupta2 openedon Nov 29, 2025

How to use Express server with <code>http2.createSecureServer</code> for HTTP/2?

Status: Open.

#6863 In expressjs/express;

·khteh openedon Oct 28, 2025

Router cycles cause silent runtime hangs

module:router

Status: Open.

#6809 In expressjs/express;

·IlyasShabi openedon Oct 6, 2025

<code>TypeError: Do not know how to serialize a BigInt</code> when using sendStatus with a BigNum instead of intended error message

enhancement

Status: Open.

#6756 In expressjs/express;

·joshua-rogers-exodus openedon Sep 13, 2025

(FR): esm support

6.x

Status: Open.

Feature

#6739 In expressjs/express;

·luas10c openedon Aug 31, 2025

TypeError: Missing parameter name at 2: https://git.new/pathToRegexpError

Status: Open.

#6724 In expressjs/express;

·bjohansebas openedon Aug 23, 2025

Restore Support for app.all('*') Wildcard in Express v5

Status: Open.

#6711 In expressjs/express;

·Tanmay-008 openedon Aug 17, 2025

The Great Monkey-Patch Safari

discuss

Status: Open.

#6669 In expressjs/express;

·jonchurch openedon Jul 30, 2025

Dependency graph improvements (via npmgraph.js.org)

Status: Open.

#6647 In expressjs/express;

·broofa openedon Jul 18, 2025