{"schemaVersion":3,"id":"CVE-2026-41479","aliases":["SUSE-SU-2026:4111-1","GHSA-w8p2-r796-3vmq","PYSEC-2026-2119","UBUNTU-CVE-2026-41479","DEBIAN-CVE-2026-41479","CGA-2qjx-xj6f-6fmx","openSUSE-SU-2026:21795-1"],"status":"published","duplicateOf":null,"title":null,"description":"Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.10 and 1.7.1, Authlib's OAuth 2.0 authorization endpoint can be turned into an unauthenticated open redirect when a request uses an unsupported response_type and supplies an attacker-controlled redirect_uri. The vulnerable behavior happens before client lookup and before any redirect URI validation. As a result, an attacker does not need a valid client registration, an authenticated user, or any prior state. A single request to the authorization endpoint is enough to obtain a 302 Location response to an arbitrary attacker-controlled URL. 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