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Bump express from 4.18.2 to 4.21.2 in /01-Login#2

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Bump express from 4.18.2 to 4.21.2 in /01-Login#2
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dependabot/npm_and_yarn/01-Login/express-4.21.2

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@dependabot dependabot bot commented on behalf of github Nov 22, 2025

Bumps express from 4.18.2 to 4.21.2.

Release notes

Sourced from express's releases.

4.21.2

What's Changed

Full Changelog: expressjs/express@4.21.1...4.21.2

4.21.1

What's Changed

Full Changelog: expressjs/express@4.21.0...4.21.1

4.21.0

What's Changed

New Contributors

Full Changelog: expressjs/express@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

... (truncated)

Changelog

Sourced from express's changelog.

4.21.2 / 2024-11-06

  • deps: path-to-regexp@0.1.12
    • Fix backtracking protection
  • deps: path-to-regexp@0.1.11
    • Throws an error on invalid path values

4.21.1 / 2024-10-08

4.21.0 / 2024-09-11

  • Deprecate res.location("back") and res.redirect("back") magic string
  • deps: serve-static@1.16.2
    • includes send@0.19.0
  • deps: finalhandler@1.3.1
  • deps: qs@6.13.0

4.20.0 / 2024-09-10

  • deps: serve-static@0.16.0
    • Remove link renderization in html while redirecting
  • deps: send@0.19.0
    • Remove link renderization in html while redirecting
  • deps: body-parser@0.6.0
    • add depth option to customize the depth level in the parser
    • 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
  • deps: path-to-regexp@0.1.10
    • Adds support for named matching groups in the routes using a regex
    • Adds backtracking protection to parameters without regexes defined
  • deps: encodeurl@~2.0.0
    • Removes encoding of \, |, and ^ to align better with URL spec
  • Deprecate passing options.maxAge and options.expires to res.clearCookie
    • Will be ignored in v5, clearCookie will set a cookie with an expires in the past to instruct clients to delete the cookie

4.19.2 / 2024-03-25

  • Improved fix for open redirect allow list bypass

4.19.1 / 2024-03-20

  • Allow passing non-strings to res.location with new encoding handling checks

... (truncated)

Commits
Maintainer changes

This version was pushed to npm by jonchurch, a new releaser for express since your current version.


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Bumps [express](https://github.com/expressjs/express) from 4.18.2 to 4.21.2.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.2/History.md)
- [Commits](expressjs/express@4.18.2...4.21.2)

---
updated-dependencies:
- dependency-name: express
  dependency-version: 4.21.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot bot added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels Nov 22, 2025
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maximusprime426 commented Nov 22, 2025

Deploy Preview for peaceful-nasturtium-96dfba failed.

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🔨 Latest commit 3fb050a
🔍 Latest deploy log https://app.netlify.com/projects/peaceful-nasturtium-96dfba/deploys/692191f4e75e13000831582c

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AI Code Review by LlamaPReview

🎯 TL;DR & Recommendation

Recommendation: Request Changes

This PR updates Express from 4.18.2 to 4.21.2 but introduces breaking changes that risk application functionality, as evidenced by CI failure. Key issues include modified URL parsing depth limits and deprecated redirect behavior that could silently fail existing workflows.

Priority File Category Impact Summary Anchors
P1 01-Login/package.json Architecture Breaking changes risk app functionality
P1 01-Login/package-lock.json Architecture Transitive deps changes risk behavior shifts
P2 01-Login/package.json Testing Insufficient tests for Express workflows
P2 01-Login/package.json Maintainability Skip versions, hard manage changes
P2 01-Login/package.json Security Security fix breaks app, risk balance

🔍 Notable Themes

  • Dependency Update Strategy: The large version jump bypasses intermediate deprecations, making it difficult to isolate and fix breaking changes incrementally.
  • Testing Gap: The CI failure highlights a lack of comprehensive integration tests for Express-dependent features, allowing breaking changes to reach deployment.

📈 Risk Diagram

This diagram illustrates the risk of breaking changes in Express update affecting request handling due to modified parsing depth limits.

sequenceDiagram
    participant C as Client
    participant S as Server
    C->>S: POST /submit with deep nested data
    S->>S: Parse URL-encoded data
    note over S: R1(P1): Depth limit may truncate data
    S-->>C: Response with error or partial data
Loading
⚠️ **Unanchored Suggestions (Manual Review Recommended)**

The following suggestions could not be precisely anchored to a specific line in the diff. This can happen if the code is outside the changed lines, has been significantly refactored, or if the suggestion is a general observation. Please review them carefully in the context of the full file.


📁 File: 01-Login/package-lock.json

The massive changes in package-lock.json indicate significant transitive dependency updates alongside the Express bump. This includes updates to critical middleware like body-parser, qs, and path-to-regexp. The transitive dependency updates could introduce subtle behavioral changes in request parsing, routing, and security handling that may not be immediately apparent from just the Express changelog.

Related Code:



💡 Have feedback? We'd love to hear it in our GitHub Discussions.
✨ This review was generated by LlamaPReview Advanced, which is free for all open-source projects. Learn more.

Comment on lines 16 to 20
"dependencies": {
"express": "^4.18.2",
"express": "^4.21.2",
"helmet": "^3.23.3",
"morgan": "^1.10.0"
}
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P1 | Confidence: High

  • Breaking changes in Express update could impact application functionality, including URL parsing depth limit changes and deprecated redirect behavior.
  • The CI failure suggests potential gaps in test coverage for Express-dependent workflows.
  • A more incremental update strategy is recommended to handle deprecations and changes systematically.
  • While security fixes are included, the application breakage creates a temporary security debt that needs risk assessment.

Code Suggestion:

Consider updating through intermediate versions in separate PRs:
"express": "^4.19.0",
Then
"express": "^4.20.0",
Finally
"express": "^4.21.2",

@dependabot @github
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dependabot bot commented on behalf of github Dec 2, 2025

Superseded by #5.

@dependabot dependabot bot closed this Dec 2, 2025
@dependabot dependabot bot deleted the dependabot/npm_and_yarn/01-Login/express-4.21.2 branch December 2, 2025 04:13
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