{"id":"CVE-2026-109371","state":"PUBLISHED","title":"ZITADEL 3.0.0 before 4.18.0 Unauthenticated Username Change via Login V1","description":"ZITADEL 3.0.0 before 4.18.0 contains a missing authentication vulnerability in the hosted Login V1 UI, where the change-username handler acts on the account bound to a login flow before any factor is verified. 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