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CVE-2026-44431

MEDIUM CVSS: 5.3 Published: 2026-05-13 Modified: 2026-06-26

Description

urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=False) still forward these sensitive headers. This vulnerability is fixed in 2.7.0.

Affected Platforms

Python Urllib3

Weakness Type

CWE-200, NVD-CWE-noinfo

References