CVE-2026-76312

Received Received - Intake

Session Material Exposure in Splunk Enterprise

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: Cisco Systems, Inc.

Description

In Splunk Enterprise versions below 10.4.1, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who can read the Hypertext Markup Language (HTML) source of a page that embeds a Splunk report could use exposed session material to access all relevant data and affect system integrity. The vulnerability is possible because the dispatch archive download path does not correctly enforce the embedded-report authorization boundary and includes sensitive session material in archived search-job data. For more information see Additional configuration for embedded reports (https://help.splunk.com/en/splunk-enterprise/create-dashboards-and-reports/reporting-manual/10.4/report-management/additional-configuration-for-embedded-reports) and Embed scheduled reports (https://help.splunk.com/en/splunk-enterprise/create-dashboards-and-reports/reporting-manual/10.4/report-management/embed-scheduled-reports) in the Splunk documentation.

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-76312

EUVD

EUVD-2026-63119

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This vulnerability affects Splunk Enterprise versions below 10.4.1, 10.2.6, 10.0.9, and 9.4.14. An unauthenticated user who can view the HTML source of a page with an embedded Splunk report could access sensitive session data. This happens because the system fails to properly enforce authorization boundaries when downloading dispatch archive paths, exposing session material in search-job data.

Detection Guidance

Check Splunk Enterprise version with: splunk version. If below 10.4.1, 10.2.6, 10.0.9, or 9.4.14, the system is vulnerable. Review embedded report configurations and inspect HTML source for exposed session material in archived search-job data.

Impact Analysis

An attacker could gain unauthorized access to sensitive data and alter system integrity. This includes viewing confidential information and potentially modifying reports or dashboards. The impact is significant due to the high CVSS score of 9.4, indicating critical severity.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating compliance requirements for data protection such as GDPR and HIPAA. Unauthorized access to sensitive data may result in legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Upgrade Splunk Enterprise to version 10.4.1, 10.2.6, 10.0.9, or 9.4.14 or later. Review and restrict access to embedded reports. Remove sensitive session material from archived search-job data. Follow Splunk's guidance on embedded report security.

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