CVE-2023-43804
urllib3 is a user-friendly HTTP client library for Python. urllib3 doesn't treat the `Cookie` HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a `Cookie` header and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly. This issue has been patched in urllib3 version 1.26.17 or 2.0.5.
- Score
- CVSS 3.1 8.1 High
- Status
- Modified - security-advisories@github.com
- Published
- 2023-10-04
- Last modified
- 2025-11-03
- Weaknesses
- CWE-200
Affected products
References
- https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
- https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d
- https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f
- https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5F5CUBAN5XMEBVBZPHFITBLM…
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I3PR7C6RJ6JUBQKIJ644DMIJ…
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAGZXYJ7H2G3SB47M453VQV…
- https://lists.debian.org/debian-lts-announce/2024/12/msg00020.html
- https://security.netapp.com/advisory/ntap-20241213-0007/
- https://www.vicarius.io/vsociety/posts/cve-2023-43804-urllib3-vulnerability-3
