In Splunk Enterprise versions below 9.0.5, 8.2.11, and 8.1.14, and Splunk Cloud Platform versions below 9.0.2303.100, an attacker can exploit a vulnerability in the {{dump}} SPL command to cause a denial of service by crashing the Splunk daemon.
https://research.splunk.com/application/fb0e6823-365f-48ed-b09e-272ac4c1dad6/