What is CVE-2026-20204?

CVE-2026-20204 is a high-severity vulnerability in Splunk Cloud Platform, classified under Insecure Temporary File. CVSS score: 7.1/10. Published 2026-04-15.

How severe is CVE-2026-20204?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Splunk Cloud Platform

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…

EPSS: 0.002 (43.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Splunk Cloud Platform — versions 10.4.2603, 10.3.2512, 10.2.2510
Splunk Enterprise — versions 10.2, 10.0, 9.4

Weakness classification (CWE)

CWE-377 — Insecure Temporary File

References

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

Frequently asked questions

What is CVE-2026-20204?: CVE-2026-20204 is a high-severity vulnerability in Splunk Cloud Platform, classified under Insecure Temporary File. CVSS score: 7.1/10. Published 2026-04-15.
How severe is CVE-2026-20204?: High severity. CVSS v3 base score is 7.1 out of 10.