CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NCVE-2023-43804
High (8.1). EPSS 1.4% chance of exploitation in the next 30 days. Fixed in urllib3 1.26.17, 2.0.6.
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.
Severity
- EPSS
- 1.4% chance of exploitation in the next 30 days; higher than 71% of CVEs (scores of 2026-10-31)
- CWE
- CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- fedoraproject:fedora
- python:urllib3
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v845-jxx5-vc9f | PyPI | urllib3 | >=2.0.0 <2.0.6 | 2.0.6 |
| GHSA-v845-jxx5-vc9f | PyPI | urllib3 | <1.26.17 | 1.26.17 |
| PYSEC-2023-192 | PyPI | urllib3 | >=2.0.0 <2.0.6 <1.26.17 | 2.0.6, 1.26.17 |
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/5F5CUBAN5XMEBVBZPHFITBLMJV5FIJJ5/