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HIGH

Remote Code Execution (RCE) 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 perform Remote Code Execution (RCE) by uploading a malicious knowledge bundle and causing it to be used by distributed search, which can allow for access to all relevant data and affect system integrity and availability. The vulnerability is possible because the Representational State Transfer (REST) API endpoint for knowledge bundle upload does not require the high-privilege capability edit_dist_peer, and distributed search accepts caller-supplied knowledge bundle selections from users who do not hold that capability. For more information see What search heads send to search peers (https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/9.2/knowledge-bundle-replication/what-search-heads-send-to-search-peers), About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/9.0/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access), Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/9.1/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities), and Using the REST API reference (https://help.splunk.com/en/splunk-enterprise/rest-api-reference/10.4/introduction/using-the-rest-api-reference) 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.

Weaknesses (1)

References (2)

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED
Assigner cisco
Published Aug 19, 2026
Updated Aug 27, 2026
Reserved Aug 19, 2026

CISA Vulnrichment

Updated Aug 21, 2026

NVD

Status Analyzed
Modified Aug 27, 2026

Red Hat

No data

ENISA EUVD

Assigner cisco
Published Aug 19, 2026
Updated Aug 27, 2026

GitHub

No data