CVE-2026-20204
High
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.
SeverityHigh
CVSS7.1
Exploit probability—
ProductSplunk
PublishedApr 15, 2026
First seenApr 15, 2026
Weakness typeCWE-377CWE-377
How to fix
Update
- splunk splunk9.3.11, 9.4.10, 10.0.5 or later
- splunk splunk_cloud_platform9.3.2411.127, 10.0.2503.13, 10.1.2507.19, 10.2.2510.9, 10.3.2512.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| splunk splunk | 9.3.0 ≤ v < 9.3.11, 9.4.0 ≤ v < 9.4.10, 10.0.0 ≤ v < 10.0.5, 10.2.0 | 9.3.11, 9.4.10, 10.0.5 |
| splunk splunk_cloud_platform | 9.3.2411 ≤ v < 9.3.2411.127, 10.0.2503 ≤ v < 10.0.2503.13, 10.1.2507 ≤ v < 10.1.2507.19, 10.2.2510 ≤ v < 10.2.2510.9, 10.3.2512 ≤ v < 10.3.2512.5 | 9.3.2411.127, 10.0.2503.13, 10.1.2507.19, 10.2.2510.9, 10.3.2512.5 |
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