express-session fails on Node.js 26

@UlisesGascon

Situation

Running citgm express-session passes on Node.js 22 & 24, and fails on Node.js 26

  1) session()
       should create multiple sessions:
     Error: read ECONNRESET
      at TCP.onStreamRead (node:internal/stream_base_commons:221:20)

Item	Status
npm package	https://www.npmjs.com/package/express-session
npm status	active
last published	1.19.0 Jan 22, 2026
weekly downloads	4,280,987
repo location	https://github.com/expressjs/session
repo last update to default branch	Aug 5, 2026
repo status	active
repo CI status	runs in Node.js up to 25 inclusive
lookup - skip	-
lookup maintainer 1	ulisesGascon

Repo CI https://github.com/expressjs/session/blob/master/.github/workflows/ci.yml runs in Node.js <=25.

Cloning the repo and running local tests using Ubuntu 26.04.1 LTS and running under Node.js 22, 24 & 26 confirm the compatibility issues for Node.js 26.

Steps to reproduce

Run https://github.com/nodejs/citgm/actions/workflows/test-module.yml

Module to test: express-session
CITGM repository to checkout: nodejs/citgm
CITGM GitHub ref to checkout: main

Result

Fails in Node.js 26:

Node.js	npm	macos	ubuntu	windows
22.23.3	10.9.9	PASS	PASS	PASS
24.21.0	11.19.0	PASS	PASS	PASS
26.10.0	11.19.1	FAIL	FAIL	FAIL

References

citgm/lib/lookup.json

Lines 171 to 175 in 4d3d256

    
           "express-session": { 
        
             "prefix": "v", 
        
             "maintainers": "ulisesGascon", 
        
             "head": true 
        
           },

cc: @UlisesGascon

Something in supertest closed the server after the first request. Upgrading supertest to 7.3.0 fixes this problem - probably forwardemail/supertest@71dc5fb and forwardemail/supertest#891 (this mentions Node.js 26).

Simple reproducer (fails on Node.js 26 on Linux with supertest older than 7.3.0):

const http = require("node:http");
const request = require("supertest");

const server = http.createServer();
server.on("request", (req, res) => res.end("hi"))

request(server).get('/').expect(200, (e) => console.error(e)); // null
request(server).get('/').expect(200, (e) => console.error(e)); // Error: read ECONNRESET

expressjs/session#1148 has been merged related to this issue. ~~A new release of express-session would need to follow before there is any change to the outcome of running citgm express-session.~~

~~express-session@1.19.0 is the failing release.~~

Updated tests results show that citgm now passes for Node.js 26 on macos and ubuntu.
Testing is done using HEAD, so no new release was needed.

Node.js	npm	macos	ubuntu	windows
22.23.3	10.9.9	PASS	PASS	FAIL
24.21.0	11.19.0	PASS	PASS	FAIL
26.12.0	11.20.0	PASS	PASS	FAIL

Testing fails on Windows, as described in #1095

error:                     | > express-session@1.19.0 test
error:                     | > ./test/support/gencert.sh && mocha --require test/support/env --check-leaks --no-exit --reporter spec test/
error:                     |
error:                     |
error:                     | '.' is not recognized as an internal or external command,
error:                     | operable program or batch file.

The repo is not currently compatible with testing on Windows, and so win32 should be skipped in citgm.

Closing, since Node.js 26 is now fixed for express-session

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`express-session` fails on Node.js 26 #1173

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	"express-session": {
	"prefix": "v",
	"maintainers": "ulisesGascon",
	"head": true
	},

express-session fails on Node.js 26 #1173

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krzysdz commented on Oct 8, 2026

MikeMcC399 commented on Oct 8, 2026

MikeMcC399 commented on Oct 18, 2026

MikeMcC399 commented on Oct 18, 2026

MikeMcC399 commented on Oct 18, 2026

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`express-session` fails on Node.js 26 #1173