With X-Pack installed, Kibana versions before 5.3.1 have an open redirect vulnerability on the login page that would enable an attacker to craft a link that redirects to an arbitrary website.
{ "versions": [ { "introduced": "0" }, { "last_affected": "5.3.0" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-8451.json"