{"schemaVersion":3,"id":"CVE-2026-91766","aliases":["UBUNTU-CVE-2026-91766","DEBIAN-CVE-2026-91766"],"status":"published","duplicateOf":null,"title":null,"description":"When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, a different port, or a downgrade from HTTPS to HTTP. A server that can steer a redirect therefore receives credentials that were only meant for the original origin. 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