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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 opened on Feb 14, 2026

Standardize on error codes for errors express throws

6.x

ideas

Status: Open.

#6951�?In expressjs/express;

· jonchurch opened on Dec 12, 2025

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

6.x

deprecate

Status: Open.

Bug

#6941�?In expressjs/express;

· BOXER78 opened on 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 opened on Nov 29, 2025

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

Status: Open.

#6863�?In expressjs/express;

· khteh opened on Oct 28, 2025

Router cycles cause silent runtime hangs

module:router

Status: Open.

#6809�?In expressjs/express;

· IlyasShabi opened on Oct 6, 2025

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

enhancement

Status: Open.

#6756�?In expressjs/express;

· joshua-rogers-exodus opened on Sep 13, 2025

(FR): esm support

6.x

Status: Open.

Feature

#6739�?In expressjs/express;

· luas10c opened on Aug 31, 2025

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

Status: Open.

#6724�?In expressjs/express;

· bjohansebas opened on Aug 23, 2025

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

Status: Open.

#6711�?In expressjs/express;

· Tanmay-008 opened on Aug 17, 2025

The Great Monkey-Patch Safari

discuss

Status: Open.

#6669�?In expressjs/express;

· jonchurch opened on Jul 30, 2025

Dependency graph improvements (via npmgraph.js.org)

Status: Open.

#6647�?In expressjs/express;

· broofa opened on Jul 18, 2025