Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-20204

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/04/2026
Last modified:
17/04/2026

Description

In Splunk Enterprise versions below 10.2.1, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.5, 10.2.2510.9, 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 could potentially perform a Remote Code Execution (RCE) by uploading a malicious file to the `$SPLUNK_HOME/var/run/splunk/apptemp` directory due to improper handling and insufficient isolation of temporary files within the `apptemp` directory.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.10
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* 9.3.0 (including) 9.3.11 (excluding)
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* 9.4.0 (including) 9.4.10 (excluding)
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* 10.0.0 (including) 10.0.5 (excluding)
cpe:2.3:a:splunk:splunk:10.2.0:*:*:*:enterprise:*:*:*
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 9.3.2411 (including) 9.3.2411.127 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.0.2503 (including) 10.0.2503.13 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.1.2507 (including) 10.1.2507.19 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.2.2510 (including) 10.2.2510.9 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.3.2512 (including) 10.3.2512.5 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools