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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-44431

urllib3: Sensitive headers forwarded across origins in proxied low-level redirects

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Status
Published
Published
Updated
Assigning organization
GitHub_M

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

urllib3 urllib3

  • >= 1.23, < 2.7.0affected

References