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…
CVE-2026-20204 · Severity: high · CVSS 7.1 · Published 2026-04-15
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.
No. Junglewise Threat Intelligence has no report of CVE-2026-20204 being exploited in the wild.
How severe is CVE-2026-20204?
High severity, with a CVSS score of 7.1, published 15 April 2026.
Which products and versions are affected?
Splunk, Splunk Cloud Platform. The advisory does not name versions.
Is there a fix for CVE-2026-20204?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-20204?
Check whether you run Splunk or Splunk Cloud Platform. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.