chore(deps): update dependency flask-cors to v6 [security] #13376
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Summary of Changes
Hello! Gemini here, providing a summary of this pull request. This PR, authored by renovate-bot, focuses on a dependency update. Specifically, it updates the flask-cors library to version 6.0.0. The primary motivation for this update, as indicated by the PR title and description, is to address several security vulnerabilities (CVEs) found in previous versions related to how CORS path matching and handling were implemented.
Highlights
- Dependency Update: The core change is the update of the
flask-corsPython package from versions5.0.1(for Python >= 3.9) and5.0.0(for Python == 3.8) to the unified version6.0.0for both Python ranges. - Security Fixes: Version 6.0.0 of
flask-corsincludes fixes for multiple security vulnerabilities (CVE-2024-6844, CVE-2024-6866, CVE-2024-6839). These CVEs address issues like inconsistent CORS matching due to '+' handling, case-insensitive path matching, and improper regex path specificity ordering. - Breaking Changes: The release notes for
v6.0.0mention a breaking change regarding path specificity ordering, which was changed to improve correctness. Users who relied on the previous, incorrect ordering might experience changes in behavior.
Changelog
- endpoints/getting-started/requirements.txt
- Updated the
flask-corsdependency specification. - Changed
flask-cors==5.0.1; python_version >= "3.9"toflask-cors==6.0.0; python_version >= "3.9". - Changed
flask-cors==5.0.0; python_version == "3.8"toflask-cors==6.0.0; python_version == "3.8".
- Updated the
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A package update,
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Code Review
This pull request updates the flask-cors dependency to version 6.0.0. This is a crucial update as it addresses several security vulnerabilities (CVE-2024-6844, CVE-2024-6866, CVE-2024-6839) present in version 5.0.1. The update is well-justified and important for the security of the application.
I have one minor suggestion to improve the maintainability of the requirements.txt file.
Summary of Findings
- Security Vulnerability Remediation: The update to
flask-corsv6.0.0 successfully addresses multiple documented CVEs (CVE-2024-6844, CVE-2024-6866, CVE-2024-6839), which is a significant improvement for the application's security posture. - Dependency Specification Maintainability: The
requirements.txtfile can be slightly simplified by consolidating theflask-corsdependency specification for different Python versions, as they now point to the same version. This improves readability and reduces redundancy.
Merge Readiness
This pull request is highly beneficial due to the security patches it incorporates by updating flask-cors. The core change is excellent. I've requested a minor change to simplify the requirements.txt file for better maintainability. Once this small adjustment is considered or made, the PR should be in a great state for merging. As I am an AI, I am not authorized to approve pull requests; please ensure further review and approval by authorized maintainers before merging.
| flask-cors==6.0.0; python_version >= "3.9" | ||
| flask-cors==6.0.0; python_version == "3.8" |
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Since flask-cors is now pinned to the same version (6.0.0) for both Python 3.8 and Python versions greater than or equal to 3.9, these two lines can be consolidated into a single line for better readability and conciseness. This would simplify the dependency specification.
Could we combine these to flask-cors==6.0.0; python_version >= "3.8"?
flask-cors==6.0.0; python_version >= "3.8"
This PR contains the following updates:
==5.0.0->==6.0.0==5.0.1->==6.0.0GitHub Vulnerability Alerts
CVE-2024-6844
A vulnerability in corydolphin/flask-cors version 5.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.
CVE-2024-6866
corydolphin/flask-cors version 5.0.1 contains a vulnerability where the request path matching is case-insensitive due to the use of the
try_matchfunction, which is originally intended for matching hosts. This results in a mismatch because paths in URLs are case-sensitive, but the regex matching treats them as case-insensitive. This misconfiguration can lead to significant security vulnerabilities, allowing unauthorized origins to access paths meant to be restricted, resulting in data exposure and potential data leaks.CVE-2024-6839
corydolphin/flask-cors version 5.0.1 contains an improper regex path matching vulnerability. The plugin prioritizes longer regex patterns over more specific ones when matching paths, which can lead to less restrictive CORS policies being applied to sensitive endpoints. This mismatch in regex pattern priority allows unauthorized cross-origin access to sensitive data or functionality, potentially exposing confidential information and increasing the risk of unauthorized actions by malicious actors.
Release Notes
corydolphin/flask-cors (flask-cors)
v6.0.0Compare Source
Breaking
Path specificity ordering has changed to improve specificity. This may break users who expected the previous incorrect ordering.
What's Changed
Full Changelog: corydolphin/flask-cors@5.0.1...6.0.0
v5.0.1Compare Source
What's Changed
This primarily changes packaging to use uv and a new release pipeline, along with some small documentation improvements
New Contributors
Full Changelog: corydolphin/flask-cors@5.0.0...5.0.01
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