| Name | CVE-2024-6221 |
| 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, without any configuration option. 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1081300 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python-flask-cors (PTS) | buster (security), buster, buster (lts) | 3.0.7-1+deb10u1 | vulnerable |
| bullseye | 3.0.9-2 | vulnerable |
| bookworm | 3.0.10-2 | vulnerable |
| sid, trixie | 5.0.0-1 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - python-flask-cors <postponed> (Minor issue, revisit when fixed upstream)
[bullseye] - python-flask-cors <postponed> (Minor issue)
https://huntr.com/bounties/a42935fc-6f57-4818-bca4-3d528235df4d
https://github.com/corydolphin/flask-cors/issues/337