# CVE-2026-20166: Sensitive Information Disclosure in Discover Splunk Observability Cloud app for Splunk Enterprise

> CVE-2026-20166: Sensitive Information Disclosure in Discover Splunk Observability Cloud app for Splunk Enterprise. CVSS 5.4 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-20166
Last updated: 2026-06-17T10:17:15Z

- Published: 2026-03-11 16:18 UTC · Updated: 2026-06-17 10:17 UTC · Assigner: cisco
- CVSS: 5.4 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- EPSS: 0.16%, 5th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-200

## 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.

## Affected vendors and products

- Splunk: Splunk Cloud Platform
- Splunk: Splunk Enterprise

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-20166)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-20166)
- [https://advisory.splunk.com/advisories/SVD-2026-0305](https://advisory.splunk.com/advisories/SVD-2026-0305)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-20166 · Markdown: https://rewindex.com/cve/CVE-2026-20166.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-20166 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:46.490Z