CVE-2026-76350
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
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 PDF attachments in the email alert action workflow. When the email alert action runs, it could execute arbitrary SPL commands with system-level privileges, expose all relevant data, and affect system integrity and availability on the search head. The vulnerability exists 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.
Risk Assessment
The risk includes arbitrary command execution with system privileges, potentially leading to full system compromise, data confidentiality breach, and service disruption.
Recommendation
It is recommended to upgrade Splunk Enterprise to one of the patched versions and restrict schedule_search capability to trusted users only.
Original NVD description (English source)
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.