CVE-2026-76350

Received Received - Intake

Splunk Enterprise PDF Alert SPL Command Injection

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 that holds a role with the schedule_search capability could configure Portable Document Format (PDF) attachments in the email alert action workflow. When the email alert action runs, it could execute arbitrary Search Processing Language (SPL) commands with system-level privileges, expose all relevant data, and affect system integrity and availability on the search head. The vulnerability is possible because the search scheduler passes a system-level authentication context rather than the action owner context to the email alert action when it renders PDF attachments. For more information see alert_actions.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/configuration-file-reference/10.4.0-configuration-file-reference/alert_actions.conf) in the Splunk documentation.

CVSS Scores

EPSS Scores

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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-2026-76350

EUVD

EUVD-2026-62915

Affected Vendors & Products

Vendor	Product	Version / Range
splunk	splunk_enterprise	9.4.14
splunk	splunk_enterprise	10.0.9
splunk	splunk_enterprise	10.2.6
splunk	splunk_enterprise	10.4.2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This vulnerability affects Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14. A user with a role that has the schedule_search capability can configure PDF attachments in email alerts. When the alert runs, it may execute arbitrary SPL commands with system-level privileges, potentially exposing data and affecting system integrity and availability.

Impact Analysis

An attacker with the right role could gain elevated privileges, access sensitive data, or disrupt system operations. This could lead to data breaches, unauthorized access, or service disruptions on the Splunk search head.

Compliance Impact

This vulnerability could lead to unauthorized data exposure or access, violating compliance requirements for GDPR, HIPAA, or other regulations. It may result in data breaches, unauthorized disclosures, or loss of system integrity, requiring remediation and reporting.

Mitigation Strategies

Upgrade Splunk Enterprise to a patched version (10.4.2, 10.2.6, 10.0.9, or 9.4.14 or later) to address the vulnerability. Review and restrict roles with the schedule_search capability to minimize exposure. Monitor Splunk logs for unusual PDF attachment generation or SPL command execution.

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