# CVE-2026-76268: Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise

> CVE-2026-76268: Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise. CVSS 9.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-76268
Last updated: 2026-10-21T22:52:20Z

- Published: 2026-10-07 20:46 UTC · Updated: 2026-10-21 22:52 UTC · Assigner: cisco
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 4.8%, 92th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-306

## Description

In Splunk Enterprise versions below 10.4.3 and 10.2.7, an unauthenticated user with network access to the Patroni Representational State Transfer (REST) Application Programming Interface (API) on a search head cluster member could execute attacker-controlled operating-system commands. The vulnerability is possible because this interface does not require authentication for critical configuration operations. For more information see Sidecar configuration settings (https://help.splunk.com/en/data-management/splunk-enterprise-admin-manual/10.2/splunk-sidecars/sidecar-configuration-settings) in the Splunk documentation. Splunk Enterprise versions 10.0.x and 9.4.x are not affected.

## Affected vendors and products

- 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-2026-76268)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-76268)
- [https://advisory.splunk.com/advisories/SVD-2026-1001](https://advisory.splunk.com/advisories/SVD-2026-1001)

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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-2026-76268 · Markdown: https://rewindex.com/cve/CVE-2026-76268.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-76268 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:00.546Z