CVE-2026-20166

Sensitive Information Disclosure in Discover Splunk Observability Cloud app for Splunk Enterprise

State: Published
Severity: 5.4 Medium
Published: Mar 11, 2026
Updated: Mar 12, 2026
Reserved: Oct 8, 2025

Description

In Splunk Enterprise versions below 10.2.1 and 10.0.4, and Splunk Cloud Platform versions below 10.2.2510.5, 10.1.2507.16, and 10.0.2503.12, a low-privileged user that does not hold the "admin" or "power" Splunk roles could retrieve the Observability Cloud API access token through the Discover Splunk Observability Cloud app due to improper access control.

This vulnerability does not affect Splunk Enterprise versions below 9.4.9 and 9.3.10 because the Discover Splunk Observability Cloud app does not come with Splunk Enterprise.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	cisco

Weaknesses

CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Products

Product	Versions
Splunk EnterpriseSplunk	10.2 to before 10.2.1Affected 10.0 to before 10.0.4Affected
Splunk Cloud PlatformSplunk	10.2.2510 to before 10.2.2510.5Affected 10.1.2507 to before 10.1.2507.16Affected 10.0.2503 to before 10.0.2503.12Affected

References

https://advisory.splunk.com/advisories/SVD-2026-0305

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