CVE-2026-20203: Splunk

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.19, 10.0.2503.13, and 9.3.2411.127, a low-privileged user that does not hold the `admin` or `power` Splunk roles, has write permission on the app, and does not hold the high-privilege capability `accelerate_datamodel`, could turn on or off Data Model Acceleration due to improper access control.

Affected products

• Splunk Splunk: from 9.3.0, before 9.3.11 (fixed in 9.3.11); from 9.4.0, before 9.4.10 (fixed in 9.4.10); from 10.0.0, before 10.0.5 (fixed in 10.0.5); from 10.2.0, before 10.2.2 (fixed in 10.2.2)
• Splunk Splunk Cloud Platform: from 9.3.2411, before 9.3.2411.127 (fixed in 9.3.2411.127); from 10.0.2503, before 10.0.2503.13 (fixed in 10.0.2503.13); from 10.1.2507, before 10.1.2507.19 (fixed in 10.1.2507.19); from 10.2.2510, before 10.2.2510.10 (fixed in 10.2.2510.10); from 10.3.2512, before 10.3.2512.6 (fixed in 10.3.2512.6)

Published 2026-04-15. Last modified 2026-06-17.