CVE-2024-37891
urllib3: proxy-authorization request header is not stripped during cross-origin redirects
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 17, 2024
Updated · October 23, 2026
Description
A flaw was found in urllib3, an HTTP client library for Python. In certain configurations, urllib3 does not treat the Proxy-Authorization HTTP header as one carrying authentication material. This issue results in not stripping the header on cross-origin redirects.
Statement
.egg-info packages, like urllib3-1.24.2-py3.6.egg-info, store only metadata such as package version and dependencies and do not contain any affected codebase.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 4.4CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE-669 · Incorrect Resource Transfer Between Spheres