CVE-2024-6866 – flask-cors

Package

Manager: pip
Name: flask-cors
Vulnerable Version: >=0 <6.0.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00058 pctl0.18369

Details

Flask-CORS vulnerable to Improper Handling of Case Sensitivity 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.

Metadata

Created: 2025-03-20T12:32:45Z
Modified: 2025-05-17T18:55:57Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-43qf-4rqw-9q2g/GHSA-43qf-4rqw-9q2g.json
CWE IDs: ["CWE-178"]
Alternative ID: GHSA-43qf-4rqw-9q2g
Finding: F113
Auto approve: 1