CVE-2026-76314

Received Received - Intake

Remote Code Execution in Splunk Enterprise

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: Cisco Systems, Inc.

Description

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who does not hold the "admin" or "power" Splunk roles could perform Remote Code Execution (RCE) by submitting crafted Splunk Web Manager Configuration content. The user could then access all relevant data and affect system integrity and availability. The vulnerability is possible because Splunk Web evaluates manager Extensible Markup Language expressions without sufficient input restrictions, and the associated configuration route does not require the capability expected for manager configuration changes. For more information see About configuration files (https://help.splunk.com/en/data-management/splunk-enterprise-admin-manual/10.4/administer-splunk-enterprise-with-configuration-files/about-configuration-files) in the Splunk documentation.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-19

Last Modified

2026-08-19

Generated

2026-08-20

AI Q&A

2026-08-20

EPSS Evaluated

N/A

NVD

CVE-2026-76314

EUVD

EUVD-2026-63121

Affected Vendors & Products

Vendor	Product	Version / Range
splunk	splunk_enterprise	to 9.4.14 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

This vulnerability allows a non-admin user in Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14 to execute remote code by submitting crafted Splunk Web Manager Configuration content. The issue occurs because Splunk Web evaluates XML expressions without proper input restrictions and lacks required authorization checks for manager configuration changes.

Detection Guidance

To detect this vulnerability, check Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14. Verify if non-admin or non-power users can access manager configuration routes or submit crafted XML content. Use Splunk CLI commands like 'splunk show version' to check the version and review Splunk Web Manager Configuration logs for unusual activity.

Impact Analysis

An attacker could gain full access to all Splunk data, modify system configurations, and disrupt operations. This could lead to data breaches, unauthorized access to sensitive information, and potential system downtime or corruption.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, and other regulations due to unauthorized data access, potential data breaches, and lack of proper access controls. Organizations may face legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, or 9.4.14 or later to address the vulnerability.

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