High [CVE-2026-76336] Improper Access Control through the REST API in Splunk Enterprise
This high-severity Splunk advisory covers CVE-2026-76336 affecting Splunk Enterprise.
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Summary
In Splunk Enterprise versions below 10.4.2 and 10.2.6, a user who does not hold the "admin" or "power" Splunk roles could delete all Search Processing Language 2 (SPL2) modules across all apps and users on the instance through the SPL2 module management Representational State Transfer (REST) API.
This could delete exported datasets and functions, affect system integrity, and cause partial service disruption. The vulnerability is possible because the SPL2 module management REST API does not sufficiently authorize and validate module deletion requests.
For more information see Manage SPL2 modules ( ) and Module permissions ( ) in the Splunk documentation.
- Splunk Enterprise 10.4 before 10.4.2
- Splunk Enterprise 10.2 before 10.2.6
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- 10.4.2
- 10.2.6
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation
Upgrade to a fixed release: 10.4.2, 10.2.6. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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