---
id: CVE-2026-76268
title: >-
  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
  execut…
summary: >-
  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
  execut…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-306
vendor: splunk
product: splunk
affected:
  - 'splunk >= 10.2.0, < 10.2.7'
  - 'splunk >= 10.4.0, < 10.4.3'
patched:
  - splunk 10.4.3
published: '2026-10-07'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T12:20:41.540'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76268'
references:
  - url: 'https://advisory.splunk.com/advisories/SVD-2026-1001'
    label: psirt@cisco.com
tags:
  - nvd
  - exploit-available
  - cve.org
epss: 0.04795
epssPercentile: 0.91892
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/murrez/CVE-2026-76268'
  nuclei:
    - CVE-2026-76268
  checkedAt: '2026-10-27T19:12:25.887Z'
exploitAvailable: true
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-08T13:36:26.303970Z'
ingestedAt: '2026-10-07T21:54:15.093Z'
---

## Overview

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

- `splunk >= 10.2.0, < 10.2.7`
- `splunk >= 10.4.0, < 10.4.3`

## Remediation

Upgrade past the affected range:

- `splunk 10.4.3`