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

Description (CNA)

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 (CNA)

Vendor / product	Versions
Splunk / Splunk Enterprise	affected 10.4 before 10.4.3; affected 10.2 before 10.2.7

CWE

CWE-306

References

https://advisory.splunk.com/advisories/SVD-2026-1001

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.