CVE-2024-6866

MEDIUM5.3EPSS 0.07%

Flask-CORS vulnerable to Improper Handling of Case Sensitivity

Published: 3/20/2025Modified: 2/4/2026
Also known as:GHSA-43qf-4rqw-9q2gCGA-whf4-f4w4-r4wg

Description

corydolphin/flask-cors version 5.0.1 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.

Affected packages (2)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1MEDIUM5.3CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

References (7)