An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.
Inconsistent CORS Matching Due to Handling of '+' in URL Path in corydolphin/flask-cors
Published 2025-03-20 · Modified
5.3EPSS 0.003
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