CVE-2026-20163: Splunk

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

In Splunk Enterprise versions below 10.2.0, 10.0.4, 9.4.9, and 9.3.10, and Splunk Cloud Platform versions below 10.2.2510.5, 10.0.2503.12, 10.1.2507.16, and 9.3.2411.124, a user who holds a role that contains the high-privilege capability `edit_cmd` could execute arbitrary shell commands using the `unarchive_cmd` parameter for the `/splunkd/__upload/indexing/preview` REST endpoint.

Affected products

• Splunk Splunk: from 9.3.0, before 9.3.10 (fixed in 9.3.10); from 9.4.0, before 9.4.9 (fixed in 9.4.9); from 10.0.0, before 10.0.4 (fixed in 10.0.4)
• Splunk Splunk Cloud Platform: from 9.3.2411, before 9.3.2411.124 (fixed in 9.3.2411.124); from 10.0.2503, before 10.0.2503.12 (fixed in 10.0.2503.12); from 10.1.2507, before 10.1.2507.16 (fixed in 10.1.2507.16); from 10.2.2510, before 10.2.2510.5 (fixed in 10.2.2510.5)

Published 2026-03-11. Last modified 2026-06-17.