In Splunk Enterprise versions below 9.2.2, 9.1.5, and 9.0.10 and Splunk Cloud Platform versions below 9.1.2312, an admin user could store and execute arbitrary JavaScript code in the browser context of another Splunk user through the conf-web/settings REST endpoint. This could potentially cause a persistent cross-site scripting (XSS) exploit.
CWE-75 Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)