🚨 [security] Update express 4.18.2 → 4.21.1 (minor)

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🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

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Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ express (4.18.2 → 4.21.1) · Repo · Changelog

Security Advisories 🚨

🚨 express vulnerable to XSS via response.redirect()

Impact

In express <4.20.0, passing untrusted user input - even after sanitizing it - to response.redirect() may execute untrusted code

Patches

this issue is patched in express 4.20.0

Workarounds

users are encouraged to upgrade to the patched version of express, but otherwise can workaround this issue by making sure any untrusted inputs are safe, ideally by validating them against an explicit allowlist

Details

successful exploitation of this vector requires the following:

1. The attacker MUST control the input to response.redirect()
2. express MUST NOT redirect before the template appears
3. the browser MUST NOT complete redirection before:
4. the user MUST click on the link in the template

🚨 Express.js Open Redirect in malformed URLs

Impact

Versions of Express.js prior to 4.19.2 and pre-release alpha and beta versions before 5.0.0-beta.3 are affected by an open redirect vulnerability using malformed URLs.

When a user of Express performs a redirect using a user-provided URL Express performs an encode using encodeurl on the contents before passing it to the location header. This can cause malformed URLs to be evaluated in unexpected ways by common redirect allow list implementations in Express applications, leading to an Open Redirect via bypass of a properly implemented allow list.

The main method impacted is res.location() but this is also called from within res.redirect().

Patches

0867302
0b74695

An initial fix went out with express@4.19.0, we then patched a feature regression in 4.19.1 and added improved handling for the bypass in 4.19.2.

Workarounds

The fix for this involves pre-parsing the url string with either require('node:url').parse or new URL. These are steps you can take on your own before passing the user input string to res.location or res.redirect.

References

#5539
koajs/koa#1800
https://expressjs.com/en/4x/api.html#res.location

Release Notes

4.21.1

What's Changed

• Backport a fix for CVE-2024-47764 to the 4.x branch by @joshbuker in #6029
• Release: 4.21.1 by @UlisesGascon in #6031

Full Changelog: 4.21.0...4.21.1

4.21.0

What's Changed

• Deprecate "back" magic string in redirects by @blakeembrey in #5935
• finalhandler@1.3.1 by @wesleytodd in #5954
• fix(deps): serve-static@1.16.2 by @wesleytodd in #5951
• Upgraded dependency qs to 6.13.0 to match qs in body-parser by @agadzinski93 in #5946

New Contributors

• @agadzinski93 made their first contribution in #5946

Full Changelog: 4.20.0...4.21.0

4.20.0

What's Changed

Important

• IMPORTANT: The default depth level for parsing URL-encoded data is now 32 (previously was Infinity)
• Remove link renderization in html while using res.redirect

Other Changes

• 4.19.2 Staging by @wesleytodd in #5561
• remove duplicate location test for data uri by @wesleytodd in #5562
• feat: document beta releases expectations by @marco-ippolito in #5565
• Cut down on duplicated CI runs by @jonchurch in #5564
• Add a Threat Model by @UlisesGascon in #5526
• Assign captain of encodeurl by @blakeembrey in #5579
• Nominate jonchurch as repo captain for http-errors, expressjs.com, morgan, cors, body-parser by @jonchurch in #5587
• docs: update Security.md by @inigomarquinez in #5590
• docs: update triage nomination policy by @UlisesGascon in #5600
• Add CodeQL (SAST) by @UlisesGascon in #5433
• docs: add UlisesGascon as triage initiative captain by @UlisesGascon in #5605
• deps: encodeurl@~2.0.0 by @blakeembrey in #5569
• skip QUERY method test by @jonchurch in #5628
• ignore ETAG query test on 21 and 22, reuse skip util by @jonchurch in #5639
• add support Node.js@22 in the CI by @mertcanaltin in #5627
• doc: add table of contents, tc/triager lists to readme by @mertcanaltin in #5619
• List and sort all projects, add captains by @blakeembrey in #5653
• docs: add @UlisesGascon as captain for cookie-parser by @UlisesGascon in #5666
• ✨ bring back query tests for node 21 by @ctcpip in #5690
• [v4] Deprecate res.clearCookie accepting options.maxAge and options.expires by @jonchurch in #5672
• skip QUERY tests for Node 21 only, still not supported by @jonchurch in #5695
• 📝 update people, add ctcpip to TC by @ctcpip in #5683
• remove minor version pinning from ci by @jonchurch in #5722
• Fix link variable use in attribution section of CODE OF CONDUCT by @IamLizu in #5762
• Replace Appveyor windows testing with GHA by @jonchurch in #5599
• Add OSSF Scorecard badge by @UlisesGascon in #5436
• update scorecard link by @bjohansebas in #5814
• Nominate @IamLizu to the triage team by @UlisesGascon in #5836
• deps: path-to-regexp@0.1.8 by @blakeembrey in #5603
• docs: specify new instructions for question and discuss by @IamLizu in #5835
• 4.x: Upgrade merge-descriptors dependency by @RobinTail in #5781
• path-to-regexp@0.1.10 by @blakeembrey in #5902

New Contributors

• @marco-ippolito made their first contribution in #5565
• @inigomarquinez made their first contribution in #5590
• @mertcanaltin made their first contribution in #5627
• @ctcpip made their first contribution in #5690
• @bjohansebas made their first contribution in #5814

Full Changelog: 4.19.1...4.20.0

4.19.2

What's Changed

• Improved fix for open redirect allow list bypass

Full Changelog: 4.19.1...4.19.2

4.19.1

What's Changed

• Fix ci after location patch by @wesleytodd in #5552
• fixed un-edited version in history.md for 4.19.0 by @wesleytodd in #5556

Full Changelog: 4.19.0...4.19.1

4.19.0

What's Changed

• fix typo in release date by @UlisesGascon in #5527
• docs: nominating @wesleytodd to be project captian by @wesleytodd in #5511
• docs: loosen TC activity rules by @wesleytodd in #5510
• Add note on how to update docs for new release by @crandmck in #5541
• Prevent open redirect allow list bypass due to encodeurl
• Release 4.19.0 by @wesleytodd in #5551

New Contributors

• @crandmck made their first contribution in #5541

Full Changelog: 4.18.3...4.19.0

4.18.3

Main Changes

• Fix routing requests without method
• deps: body-parser@1.20.2
  • Fix strict json error message on Node.js 19+
  • deps: content-type@~1.0.5
  • deps: raw-body@2.5.2

Other Changes

• Use https: protocol instead of deprecated git: protocol by @vcsjones in #5032
• build: Node.js@16.18 and Node.js@18.12 by @abenhamdine in #5034
• ci: update actions/checkout to v3 by @armujahid in #5027
• test: remove unused function arguments in params by @raksbisht in #5124
• Remove unused originalIndex from acceptParams by @raksbisht in #5119
• Fixed typos by @raksbisht in #5117
• examples: remove unused params by @raksbisht in #5113
• fix: parameter str is not described in JSDoc by @raksbisht in #5130
• fix: typos in History.md by @raksbisht in #5131
• build : add Node.js@19.7 by @abenhamdine in #5028
• test: remove unused function arguments in params by @raksbisht in #5137
• use random port in test so it won't fail on already listening by @rluvaton in #5162
• tests: use cb() instead of done() by @kristof-low in #5233
• examples: remove multipart example by @riddlew in #5195
• Update support Node.js@18 in the CI by @UlisesGascon in #5490
• Fix favicon-related bug in cookie-sessions example by @DmytroKondrashov in #5414
• Release 4.18.3 by @UlisesGascon in #5505

New Contributors

• @vcsjones made their first contribution in #5032
• @abenhamdine made their first contribution in #5034
• @armujahid made their first contribution in #5027
• @raksbisht made their first contribution in #5124
• @rluvaton made their first contribution in #5162
• @kristof-low made their first contribution in #5233
• @riddlew made their first contribution in #5195
• @DmytroKondrashov made their first contribution in #5414

Full Changelog: 4.18.2...4.18.3

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

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Closed in favor of #476.