{"schemaVersion":3,"id":"CVE-2026-20184","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service.\n\nThis vulnerability existed because of improper certificate validation. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service endpoint and supplying a crafted token. 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