Security Advisory

CVE-2023-43804

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-10-04 16:01:50

Last updated 2025-11-03 21:49:44

Assigner GitHub_M

State PUBLISHED

Description

urllib3 is a user-friendly HTTP client library for Python. urllib3 doesnt 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 doesnt disable redirects explicitly. This issue has been patched in urllib3 version 1.26.17 or 2.0.5.

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