Business Logic Errors Affecting python-flask-cors package, versions *
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- published22 Mar 2025
- disclosed20 Mar 2025
Introduced: 20 Mar 2025
NewCVE-2024-6844 (opens in a new tab)How to fix?
There is no fixed version for Debian:unstable python-flask-cors.
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 Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
A vulnerability in corydolphin/flask-cors version 4.0.1 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.