Vulnerability Report

CVE-2026-20204

RCE

Title: Remote Code Execution via Temporary Files in Splunk Enterprise and Cloud Platform

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2026-20204.

CWE Category CWE-377

Published Date Apr 15, 2026

Modified Date Apr 17, 2026

Exploit Status Not Found

Score 7.1 CVSS v3.1

Exploit Probability (EPSS)

3.28%

Vulnerability Summary

CVE-2026-20204: 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.

Impacted Vendors

splunk 2

jenkins 1

Reference Links

https://advisory.splunk.com/advisories/SVD-2026-0403

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.1

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns