---
id: CVE-2026-76271
title: >-
  In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a
  low-privileged user that does not hold the "admin" or "power" Splunk roles
  could cause a denial of service against a Representational State Transfer
  (REST) API endpoint i…
summary: >-
  In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a
  low-privileged user that does not hold the "admin" or "power" Splunk roles
  could cause a denial of service against a Representational State Transfer
  (REST) API endpoint i…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-407
vendor: splunk
product: splunk
affected:
  - 'splunk >= 10.0.0, < 10.0.10'
  - '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: '2026-10-14T12:11:09.827'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76271'
references:
  - url: 'https://advisory.splunk.com/advisories/SVD-2026-1001'
    label: psirt@cisco.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-08T18:01:15.297829Z'
epss: 0.00351
epssPercentile: 0.28562
ingestedAt: '2026-10-07T21:54:15.094Z'
---

## Overview

In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a low-privileged user that does not hold the "admin" or "power" Splunk roles could cause a denial of service against a Representational State Transfer (REST) API endpoint in the Discover Splunk Observability Cloud app. The vulnerability is possible because the app uses an inefficient regular expression to validate input submitted through the endpoint. For more information see About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access), Splunk Observability Cloud previews (https://help.splunk.com/en/splunk-enterprise/search/search-manual/10.4/observability/splunk-observability-cloud-previews), and restmap.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/configuration-file-reference/10.4.0-configuration-file-reference/restmap.conf) in the Splunk documentation.

Splunk Enterprise versions 9.4.x are not affected.

## Affected

- `splunk >= 10.0.0, < 10.0.10`
- `splunk >= 10.2.0, < 10.2.7`
- `splunk >= 10.4.0, < 10.4.3`

## Remediation

Upgrade past the affected range:

- `splunk 10.4.3`