Sign in to Webex Site Administration and go to.
In the Security Options section, check Enable cross-origin resource sharing (CORS).
In the text box, type your list of trusted domains; use a comma to separate domain names.
Enable Origins Allowed List for CORS
As an administrator, you can set up an allowed list for cross-origin resource sharing (CORS). The domains in the allowed list can use the XML API to access meeting data. In earlier versions of Webex meeting services, administrators had to request assistance from TAC to configure CORS.