Security Hardening Release for Splunk Enterprise Security - August 2026
Advisory ID: SVD-2026-0807
Published: 2026-08-19
Highest CVSSv3.1 Score: 8.1, High
Last Updated: 2026-08-19
Description
Splunk addressed multiple vulnerabilities in Splunk Enterprise Security. See CVE Details for vulnerability-specific information.
Solutions
Upgrade Splunk Enterprise Security to 8.6.1 or higher.
Product Status
| Product | Base Version | Affected Version | Fix Version |
|---|---|---|---|
| Splunk Enterprise Security | 8.6 | Below 8.6.1 | 8.6.1 |
Vulnerabilities
| CVE | Summary | CWE | CVSSv3.1 Score | Severity |
|---|---|---|---|---|
| CVE-2026-76387 | SPL Injection through the REST API in Splunk Enterprise Security | CWE-20 | 8.1 | High |
| CVE-2026-76388 | Privilege Escalation through Search Macro Permissions in Splunk Enterprise Security | CWE-732 | 8.1 | High |
CVE Details
CVE-2026-76387: SPL Injection through the REST API in Splunk Enterprise Security
Description
In Splunk Enterprise Security versions below 8.6.1, a user who holds a Splunk Enterprise Security role that contains the mc_investigation_read capability could inject Search Processing Language (SPL) through Analyst Queue search filters, allowing for access to all relevant data and system integrity available to the scheduled searches that run for that user. The vulnerability is possible because the Analyst Queue search filter handling does not validate filter field names before the fields are included in SPL searches. For more information see Users and roles for Splunk Enterprise Security, Manage analyst workflows using the analyst queue in Splunk Enterprise Security, and Overview of Mission Control in Splunk Enterprise Security in the Splunk documentation.
Bug ID: VULN-82012
CWE: CWE-20
CVSSv3.1 Score: 8.1, High
CVSSv3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVE-2026-76388: Privilege Escalation through Search Macro Permissions in Splunk Enterprise Security
Description
In Splunk Enterprise Security versions below 8.6.1, a user who holds the ess_analyst Splunk Enterprise Security role could change User and Entity Behavior Analytics (UEBA) search macros that scheduled searches run with administrator permissions, allowing for access to all relevant data and system integrity through those searches. The vulnerability is possible because the UEBA app metadata grants analyst roles write access to search macros that should be writable only by administrator roles. For more information see Users and roles for Splunk Enterprise Security and Roles and knowledge objects in UEBA for Splunk Enterprise Security in the Splunk documentation.
Bug ID: VULN-86559
CWE: CWE-732
CVSSv3.1 Score: 8.1, High
CVSSv3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N