CVE-2026-76268
Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise
- State
- Published
- Severity
- 9.8 Critical
- Published
- Oct 7, 2026
- Updated
- Oct 21, 2026
- Reserved
- Aug 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | cisco |
Weaknesses
- CWE-306 The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Affected Products
| Product | Versions |
|---|---|
Splunk EnterpriseSplunk |
|
References
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