CVE-2024-6866
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.
| Software | From | Fixed in |
|---|---|---|
Flask-Cors
|
- | 6.0.0 |
| flask-cors_project / flask-cors | 4.0.1 | 4.0.1.x |
- https://github.com/corydolphin/flask-cors/blob/4.0.1/flask_cors/extension.py#L195
- https://github.com/corydolphin/flask-cors/commit/eb39516a3c96b90d0ae5f51293972395ec3ef358
- https://huntr.com/bounties/808c11af-faee-43a8-824b-b5ab4f62b9e6
- https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html
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