PyPI/flask-cors CVE-2024-6839: medium 4.3, EPSS 0.74%

Flask-CORS improper regex path matching vulnerability

Action: Upgrade flask-cors to 6.0.0 or later.

pip install flask-cors==6.0.0

Affected

Fixed versions

Sources

• osv: PYSEC-2026-1384
• https://nvd.nist.gov/vuln/detail/CVE-2024-6839
• https://github.com/corydolphin/flask-cors/commit/e970988bea563e05e8b8f53fa7bcc134b5bf5c5f
• https://github.com/corydolphin/flask-cors
• https://github.com/corydolphin/flask-cors/blob/4.0.1/flask_cors/core.py#L73
• https://huntr.com/bounties/403eb1fc-86f4-4820-8eba-0f3dfae9f2b4
• https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html
• https://pypi.org/project/flask-cors
• https://github.com/advisories/GHSA-7rxf-gvfg-47g4

CVE-2024-6839 · published 2026-07-07T14:34:54.195042Z · modified 2026-07-07T17:47:37.819558923Z · JSON