CVE-2026-76398: Improper Access Control during Experiment History Deletion through the REST API in Splunk AI Toolkit
In Splunk AI Toolkit versions below 6.0.1, a user who does not hold the "admin" or "power" Splunk roles could delete the experiment history of another user without permission through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk AI Toolkit deletes experiment history before it verifies that the user can delete the associated experiment. For more information see Experiment Assistants (https://help.splunk.com/en/splunk-cloud-platform/apply-machine-learning/use-ai-toolkit/5.6.4/experiment-assistants) in the Splunk documentation.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
Any Splunk AI Toolkit user who does not have the admin or power role may be able to delete another user's experiment history through the REST API. Exploitation requires access to the REST API with a low-privileged user account.
What is the impact of successful exploitation?
An attacker can delete experiment history belonging to another user. The provided information indicates an integrity impact only; it does not indicate confidentiality or availability impact.
Which deployments are affected?
Splunk AI Toolkit versions below 6.0.1 are affected. The issue involves experiment-history deletion through the REST API.