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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade python-flask-cors | May 15, 2025 | Mar 20, 2025 |
| Ubuntu | — | Upgrade python3-flask-cors (Ubuntu Pro)Upgrade python3-flask-cors | Jun 26, 2025 | Mar 20, 2025 |
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