CVE-2026-76268: 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)…

PriorityP277critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EXPLOIT

EPSS

1.59%

75.4th percentile

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

4 ranges

Vendor	Product	Version range	Fixed in
splunk	splunk	>= 10.2.0 < 10.2.7	10.2.7
splunk	splunk	>= 10.4.0 < 10.4.3	10.4.3
splunk	splunk_enterprise	>= 10.2 < 10.2.7	10.2.7
splunk	splunk_enterprise	>= 10.4 < 10.4.3	10.4.3

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