CVE-2024-6221
HIGH7.5EPSS 0.64%Flask-CORS allows the `Access-Control-Allow-Private-Network` CORS header to be set to true by default
Published: 8/18/2024Modified: 5/21/2026
Description
A vulnerability in corydolphin/flask-cors version 4.0.1 allows the `Access-Control-Allow-Private-Network` CORS header to be set to true by default. This behavior can expose private network resources to unauthorized external access, leading to significant security risks such as data breaches, unauthorized access to sensitive information, and potential network intrusions.
Affected packages (4)
- Debian/python-flask-corsfrom 0, < 5.0.0-1
- PyPI/flask-corsfrom 0, < 4.0.2
- PyPI/flask-corsfrom 0, <= 4.0.1
- PyPI/flask-corsfrom 0, < 4.0.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
References (13)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2024-6221
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2024-6221
- PATCHhttps://github.com/corydolphin/flask-cors
- WEBhttps://github.com/corydolphin/flask-cors/commit/03aa3f8e2256437f7bad96422a747b98ab5e31bf
- WEBhttps://github.com/corydolphin/flask-cors/commit/7ae310c56ac30e0b94fb42129aa377bf633256ec
- WEBhttps://github.com/corydolphin/flask-cors/commit/c8514760cf03fcce16d77f6db7007aad429c4548
- WEBhttps://github.com/corydolphin/flask-cors/issues/362
- WEBhttps://github.com/corydolphin/flask-cors/pull/363
- WEBhttps://github.com/corydolphin/flask-cors/pull/368
- WEBhttps://github.com/corydolphin/flask-cors/releases
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/flask-cors/PYSEC-2024-260.yaml
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/flask-cors/PYSEC-2024-71.yaml
- WEBhttps://huntr.com/bounties/a42935fc-6f57-4818-bca4-3d528235df4d