Improper Handling of Case Sensitivity Affecting python-flask-cors package, versions <4.0.1-1ubuntu0.1
Threat Intelligence
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Test your applications- Snyk IDSNYK-UBUNTU2410-PYTHONFLASKCORS-9507619
- published26 Jun 2025
- disclosed20 Mar 2025
Introduced: 20 Mar 2025
CVE-2024-6866 (opens in a new tab)How to fix?
Upgrade Ubuntu:24.10 python-flask-cors to version 4.0.1-1ubuntu0.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-flask-cors package and not the python-flask-cors package as distributed by Ubuntu.
See How to fix? for Ubuntu:24.10 relevant fixed versions and status.
corydolphin/flask-cors version 4.01 contains a vulnerability where the request path matching is case-insensitive due to the use of the try_match function, 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.