CVE-2023-43804

`Cookie` HTTP header isn't stripped on cross-origin redirects

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.

Patch Available

Fix available through Seal Security.  
No upgrade required, protect your application instantly.

Fix without upgrading

Score

Severity

Ecosystem

Python

Publish Date

October 4, 2023

Modified Date

November 7, 2023

Score Vector

Affected Versions