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CVE-2026-44431

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

Description (CNA)

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 (CNA)

Vendor / productVersions
urllib3 / urllib3affected >= 1.23, < 2.7.0

CWE

CWE-200

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.