Kibana versions before 6.8.11 and 7.8.1 contain a denial of service (DoS) flaw in Timelion. An attacker can construct a URL that when viewed by a Kibana user can lead to the Kibana process consuming large amounts of CPU and becoming unresponsive.
In Kibana versions before 6.8.11 and 7.8.1 the region map visualization in contains a stored XSS flaw. An attacker who is able to edit or create a region map visualization could obtain sensitive information or perform destructive actions on behalf of Kibana users who view the region map visualization.