MEDIUM 6.1

PYSEC-2023-207

Details

urllib3 before 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the authorization header to be exposed to unintended hosts or transmitted in cleartext. NOTE: this issue exists because of an incomplete fix for CVE-2018-20060 (which was case-sensitive).

Are you affected?

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Affected packages

PyPI / urllib3

Introduced in: 0 Fixed in: adb358f8e06865406d1f05e581a16cbea2136fbc

Fix pip install --upgrade 'urllib3>=adb358f8e06865406d1f05e581a16cbea2136fbc'

References

https://github.com/urllib3/urllib3/compare/1.24.1...1.24.2 [FIX]
https://github.com/urllib3/urllib3/issues/1510 [ADVISORY]
https://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc [FIX]