Splunk AI Toolkit up to 5.x REST API improper authorization

Summaryinfo

A vulnerability, which was classified as critical, was found in Splunk AI Toolkit up to 5.x. Impacted is an unknown function of the component REST API Handler. The manipulation results in improper authorization. This vulnerability is identified as CVE-2026-76394. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Splunk AI Toolkit up to 5.x. It has been classified as critical. Affected is some unknown functionality of the component REST API Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In Splunk AI Toolkit versions below 6.0.0, a low-privileged user who does not hold the "admin" or "power" Splunk roles could start, stop, and configure containers, and read or modify connection and configuration data through the Representational State Transfer (REST) API. The missing authorization is possible because multiple REST API handlers in Splunk AI Toolkit do not enforce authorization checks. For more information see Troubleshoot the Splunk Machine Learning Toolkit (https://help.splunk.com/en/splunk-cloud-platform/apply-machine-learning/machine-learning-toolkit-user-guide/5.5.0/troubleshooting-mltk/troubleshoot-the-splunk-machine-learning-toolkit) in the Splunk documentation.

The advisory is available at advisory.splunk.com. This vulnerability is traded as CVE-2026-76394 since 08/19/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

Upgrading to version 6.0.0 eliminates this vulnerability.

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Productinfo

Type

• Log Management Software

Vendor

• Splunk

Name

• AI Toolkit

Version

• 5.x

License

• free

CPE 2.3info

• 🔒

CPE 2.2info

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