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HIGH

Improper Authorization through the REST API in Splunk Enterprise

Published Aug 19, 2026

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 create or modify a scripted lookup through generic configuration endpoints and run an installed lookup script with the permissions of the user account running Splunk Enterprise, which could allow for access to all relevant data and affect system integrity and availability. The vulnerability is possible because the generic transforms configuration endpoints do not enforce the capabilities required to create or edit external lookup definitions. For more information see Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities) and limits.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/configuration-file-reference/10.4.2-configuration-file-reference/limits.conf) in the Splunk documentation.

Affected products

Remediation

Vendor solution

Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, and 9.4.14, or higher.

After upgrading, set `scripted_lookup_raw_write_enforcement = block` in the `limits.conf` configuration file under `[lookup]`, and then restart Splunk Enterprise.

Weaknesses (1)

References (1)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Aug 19, 2026
Updated Aug 21, 2026
Reserved Aug 19, 2026
CISA Vulnrichment
Updated Aug 20, 2026
NVD
Status Analyzed
Modified Aug 21, 2026
Red Hat
Severity n/a
Public date n/a