Remote Code Execution (RCE) through the REST API in Splunk Enterprise
Published Aug 19, 2026
8.8
HIGHCVSS 3.1
EPSS 0.64%
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
-
Affected
- ≥ 10.0, < 10.0.9
- ≥ 10.2, < 10.2.6
- ≥ 10.4, < 10.4.2
- ≥ 9.4, < 9.4.14
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Splunk | Splunk Enterprise | unknown | Affected
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, and 9.4.14, or higher.
References (2)
- https://advisory.splunk.com/advisories/SVD-2026-0801 Vendor Advisory
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-63120 Advisory
| Link | Providers | Tags |
|---|---|---|
| https://advisory.splunk.com/advisories/SVD-2026-0801 | Vendor Advisory | |
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-63120 | Advisory |
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
Red Hat
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GitHub
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