Description
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.
CVSS Metrics
- Vector
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- network
- Complexity
- high
- Privileges
- high
- User Action
- none
- Scope
- unchanged
- Confidentiality
- high
- Integrity
- high
- Availability
- none
- Weaknesses
- CWE-200NVD-CWE-noinfo
Metadata
- Primary Vendor
- PYTHON
- Published
- 10/4/2023
- Last Modified
- 11/3/2025
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
python : urllib3python : urllib3debian : debian_linuxfedoraproject : fedorafedoraproject : fedorafedoraproject : fedora
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