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[Snyk] Security upgrade werkzeug from 2.2.3 to 3.1.4 - #7

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snyk-fix-0fa8fdce84d50ba88bff584eb0df265f
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snyk-fix-0fa8fdce84d50ba88bff584eb0df265f

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@NeoRosis

@NeoRosis NeoRosis commented Dec 1, 2025

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

Snyk changed the following file(s):

  • examples/google_cloud_functions/requirements.txt
⚠️ Warning
Flask 2.2.5 requires Werkzeug, which is not installed.

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.
  • Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the affected dependencies could be upgraded.

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…rabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-WERKZEUG-14151620
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Code review in progress. Analyzing for code quality issues and best practices. You can monitor the review status in the checks section at the bottom of this pull request. Detailed findings will be posted upon completion.

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Summary of Changes

Hello @NeoRosis, 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, automatically generated by Snyk, aims to enhance the security posture of the project by upgrading the werkzeug dependency. The upgrade specifically targets a vulnerability found in older versions of werkzeug, ensuring that the examples/google_cloud_functions environment uses a more secure version of the library.

Highlights

  • Security Upgrade: The werkzeug dependency has been upgraded from version 2.2.3 to 3.1.4 to address a security vulnerability.
  • Automated Fix: This pull request was automatically generated by Snyk to remediate the identified vulnerability.
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Security Upgrade Review

This PR addresses a security vulnerability by upgrading Werkzeug from 2.2.3 to 3.1.4. While the security fix is important, there's a potential compatibility issue that needs to be addressed.

Key Concerns:

  • The Flask version constraint (Flask>1) is too broad and may allow Flask versions incompatible with Werkzeug 3.1.4
  • This version mismatch could cause runtime errors in the Google Cloud Functions example

Recommendation:
Please update the Flask version constraint to ensure compatibility with Werkzeug 3.x before merging this security fix.


You can now have the agent implement changes and create commits directly on your pull request's source branch. Simply comment with /q followed by your request in natural language to ask the agent to make changes.

slack_bolt
google-cloud-datastore>=2.1.0,<3 No newline at end of file
google-cloud-datastore>=2.1.0,<3
werkzeug>=3.1.4 # not directly required, pinned by Snyk to avoid a vulnerability No newline at end of file

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🛑 Compatibility Risk: Werkzeug 3.1.4 may be incompatible with the current Flask constraint Flask>1. Flask 2.x typically requires Werkzeug 2.x, while Flask 3.x works with Werkzeug 3.x. Consider updating the Flask version constraint to ensure compatibility.

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Code Review

This pull request from Snyk aims to fix a security vulnerability by upgrading werkzeug. However, the proposed upgrade to werkzeug>=3.1.4 is problematic. Firstly, this version does not appear to exist on PyPI, which would cause builds to fail. Secondly, upgrading werkzeug to a 3.x version introduces breaking changes that are incompatible with Flask 2.x. Since the requirements.txt allows for Flask 2.x versions to be installed (Flask>1), this automated upgrade would likely break the application. I've suggested a safer alternative to pin werkzeug to a secure 2.x version to mitigate the vulnerability without causing breakages.

slack_bolt
google-cloud-datastore>=2.1.0,<3 No newline at end of file
google-cloud-datastore>=2.1.0,<3
werkzeug>=3.1.4 # not directly required, pinned by Snyk to avoid a vulnerability No newline at end of file

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critical

This change pins werkzeug to a version >=3.1.4. There are two critical issues with this:

  1. Non-existent version: As of now, version 3.1.4 of werkzeug does not seem to be published on PyPI. The latest version is 3.0.3. This will likely cause the dependency installation to fail.

  2. Breaking Change: Even if this were a typo for an existing 3.x version, werkzeug version 3.x introduced significant breaking changes and is not compatible with Flask 2.x. Your requirements.txt specifies Flask>1, which could resolve to a Flask 2.x version, causing your application to break at runtime.

To fix the security vulnerability without introducing breaking changes, I recommend pinning werkzeug to the latest secure version in the 2.x series. Version 2.3.8 is the latest in the 2.3.x line and should be a safe upgrade.

werkzeug>=2.3.8,<3.0.0 # not directly required, pinned to avoid a vulnerability and breaking changes

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