VDB
KO
MEDIUM 4.3

GHSA-7rxf-gvfg-47g4

Flask-CORS improper regex path matching vulnerability

Details

corydolphin/flask-cors version 5.0.1 contains an improper regex path matching vulnerability. The plugin prioritizes longer regex patterns over more specific ones when matching paths, which can lead to less restrictive CORS policies being applied to sensitive endpoints. This mismatch in regex pattern priority allows unauthorized cross-origin access to sensitive data or functionality, potentially exposing confidential information and increasing the risk of unauthorized actions by malicious actors.

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Affected packages

PyPI / flask-cors
Introduced in: 0 Fixed in: 6.0.0
Fix pip install --upgrade 'flask-cors>=6.0.0'

References