In Splunk Enterprise versions below 9.2.2, 9.1.5, and 9.0.10 and Splunk Cloud Platform versions below 9.2.2403.100, an authenticated, low-privileged user that does not hold the admin or power Splunk roles could send a specially crafted HTTP POST request to the datamodel/web REST endpoint in Splunk Enterprise, potentially causing a denial of service.
https://securityaffairs.com/165204/security/splunk-enterprise-and-cloud-platform-flaws.html
https://research.splunk.com/application/45766810-dbb2-44d4-b889-b4ba3ee0d1f5