CVE-2026-76336

Improper Access Control through the REST API in Splunk Enterprise

State
Published
Severity
7.1 High
Published
Aug 19, 2026
Updated
Aug 26, 2026
Reserved
Aug 19, 2026

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Description

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 does not affect Splunk Enterprise versions below 10.2. 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 (https://help.splunk.com/en/splunk-enterprise/search/spl2-search-manual/multiple-searches-in-an-spl2-module/manage-spl2-modules) and Module permissions (https://help.splunk.com/en/splunk-enterprise/search/spl2-search-manual/modules-statements-and-views/module-permissions) in the Splunk documentation.

Scores

CVSSScoreVectorSource
3.17.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Lcisco

Weaknesses

  • CWE-862 The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

Affected Products

ProductVersions
Splunk EnterpriseSplunk
  • 10.4 to before 10.4.2Affected
  • 10.2 to before 10.2.6Affected

References

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