AIKIDO-2026-10812
urllib3-future is vulnerable to Exposure of Sensitive Information to an Unauthorized Actor
82
High Risk
This Affects:
urllib3-futureTL;DR
Affected versions of urllib3-future may forward sensitive headers such as Authorization, Cookie, and Proxy-Authorization during cross-origin redirects when using certain low-level proxy APIs. This can result in credential leakage to unintended external hosts.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
urllib3-future is vulnerable to Exposure of Sensitive Information to an Unauthorized Actor in versions 2.0.931 - 2.19.913.
How to fix this
Upgrade the urllib3-future library to the patch version. If upgrading is not possible, avoid using ProxyManager.connection_from_url().urlopen(..., assert_same_host=False) for cross-origin redirects and use ProxyManager.request() instead where applicable.
Links
GitHub Release
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SOC 2Compliant
ISO 27001Compliant