In Splunk Enterprise versions below 8.2.9, 8.1.12, and 9.0.2, an authenticated user can execute arbitrary code through the dashboard PDF generation component.
https://www.splunk.com/en_us/product-security/announcements/svd-2022-1111.html
https://research.splunk.com/application/b06b41d7-9570-4985-8137-0784f582a1b3/