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@snyk-io snyk-io bot commented Dec 3, 2025

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Snyk has created this PR to fix 1 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

  • samples/dynamic-html/package.json

Merge Risk: High

The upgrade from Express v3 to v4 is a major version with significant breaking changes. An existing Express 3 app will not work without modifications.

Key Breaking Changes:

  • Middleware is no longer bundled: All middleware functions (except express.static) have been removed from the Express core. You must now manually install and include packages like body-parser, cookie-parser, compression, and morgan.
  • app.router has been removed: The app.use(app.router) call must be removed. Middleware and routes are now executed strictly in the order they are added.

Source: Migrating to Express 4 documentation.
Recommendation: This upgrade requires code refactoring. Developers must add dependencies for all required middleware and update the application's bootstrap sequence before merging.

Notice 🤖: This content was generated using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.


Vulnerabilities that will be fixed with an upgrade:

Issue Score
medium severity Prototype Pollution
SNYK-JS-EXPRESS-14157151
  66  

Important

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

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

For more information:
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snyk-io bot commented Dec 3, 2025

Snyk checks have passed. No issues have been found so far.

Status Scanner Critical High Medium Low Total (0)
Open Source Security 0 0 0 0 0 issues
Licenses 0 0 0 0 0 issues

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