CVE-2024-6221

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)	bullseye	3.0.9-2	vulnerable
	bookworm	3.0.10-2	vulnerable
	sid, trixie	5.0.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
python-flask-cors	source	(unstable)	5.0.0-1			1081300

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
https://github.com/advisories/GHSA-hxwh-jpp2-84pm
https://github.com/corydolphin/flask-cors/commit/7ae310c56ac30e0b94fb42129aa377bf633256ec (4.0.2)