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[Snyk] Upgrade express from 4.16.4 to 4.21.2 #622

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[Snyk] Upgrade express from 4.16.4 to 4.21.2 #622

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Snyk has created this PR to upgrade express from 4.16.4 to 4.21.2.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

  • The recommended version is 15 versions ahead of your current version.

  • The recommended version was released 8 months ago.

Issues fixed by the recommended upgrade:

Issue Score Exploit Maturity
high severity Asymmetric Resource Consumption (Amplification)
SNYK-JS-BODYPARSER-7926860		 624 No Known Exploit
high severity Prototype Poisoning
SNYK-JS-QS-3153490		 624 Proof of Concept
high severity Prototype Poisoning
SNYK-JS-QS-3153490		 624 Proof of Concept
medium severity Cross-site Scripting (XSS)
SNYK-JS-COOKIE-8163060		 624 No Known Exploit
medium severity Open Redirect
SNYK-JS-EXPRESS-6474509		 624 No Known Exploit
medium severity Cross-site Scripting
SNYK-JS-EXPRESS-7926867		 624 No Known Exploit
medium severity Regular Expression Denial of Service (ReDoS)
SNYK-JS-PATHTOREGEXP-7925106		 624 Proof of Concept
medium severity Regular Expression Denial of Service (ReDoS)
SNYK-JS-PATHTOREGEXP-8482416		 624 Proof of Concept
low severity Cross-site Scripting
SNYK-JS-SEND-7926862		 624 No Known Exploit
low severity Cross-site Scripting
SNYK-JS-SERVESTATIC-7926865		 624 No Known Exploit
Release notes
Package name: express from express GitHub release notes

Important

  • Check the changes in this PR to ensure they won't cause issues with your project.
  • This PR was automatically created by Snyk using the credentials of a real user.
  • Max score is 1000. Note that the real score may have changed since the PR was raised.

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open upgrade PRs.

For more information:

@snyk-bot
fix: upgrade express from 4.16.4 to 4.21.2
02fcbb1 
Snyk has created this PR to upgrade express from 4.16.4 to 4.21.2.

See this package in npm:
express

See this project in Snyk:
https://app.snyk.io/org/newtonombese1/project/c9850ebd-3b0c-4891-8128-167cc7bd6402?utm_source=github&utm_medium=referral&page=upgrade-pr
gemini-code-assist[bot]
gemini-code-assist bot reviewed Aug 19, 2025
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Summary of Changes

Hello @nejidevelops, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request performs a significant security-driven upgrade of the express framework to its latest stable version, 4.21.2. This update is crucial for mitigating several identified vulnerabilities across the application's dependency chain, including critical issues like Prototype Poisoning, Cross-site Scripting, and Denial of Service. The changes primarily involve updating the express version in package.json and a comprehensive refresh of the package-lock.json to reflect the updated dependency tree, ensuring the application benefits from the latest security patches and improvements.

Highlights

  • Express Framework Upgrade: The core purpose of this PR is to upgrade the express framework from version 4.16.4 to 4.21.2.
  • Critical Security Fixes: This upgrade addresses multiple high and medium severity security vulnerabilities, including Asymmetric Resource Consumption (Amplification) in body-parser, Prototype Poisoning in qs, Cross-site Scripting (XSS) in cookie, express, send, and serve-static, Open Redirect in express, and Regular Expression Denial of Service (ReDoS) in path-to-regexp.
  • Dependency Tree Updates: The package-lock.json file has been extensively updated to reflect the new versions of express and its numerous transitive dependencies, ensuring all components are aligned with the latest secure versions.
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Code Review

This pull request, automatically generated by Snyk, upgrades the express package from version 4.16.4 to 4.21.2. This is a crucial update that resolves multiple security vulnerabilities, including high-severity issues like Prototype Poisoning and Asymmetric Resource Consumption. While the dependency upgrade is important, I've noticed that the package-lock.json file has been modified to point to the public npm registry (registry.npmjs.org) instead of the private nexus repository (nexus.solutions.consensys-uk.net) that was previously used. This could be an unintended side effect of how the lockfile was generated and might cause issues in your build pipeline. Please review this change carefully.

course-04/exercises/c4-demos-master/10-udagram-app/package-lock.json
"resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/accepts/-/accepts-1.3.5.tgz",
"integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
"version": "1.3.8",
"resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
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high

The registry URL for this and many other packages has been changed from the private nexus repository (nexus.solutions.consensys-uk.net) to the public npm registry (registry.npmjs.org). This was likely caused by Snyk running npm install without access to your private registry. If your project relies on the private registry, this change could break your builds or pull in unvetted packages. Please verify if this change is intentional. If not, you should regenerate the package-lock.json file using your project's configured npm registry.

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