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High8.1Splunk

High [CVE-2026-76397] Improper Access Control in Experiment History through the REST API in Splunk AI Toolkit

This high-severity Splunk advisory covers CVE-2026-76397 affecting Splunk AI Toolkit.

CVE-2026-76397 Published Aug 19, 2026Updated by vendor Aug 19, 2026
Affected products & platforms
SplunkUnclassified
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Summary

In Splunk AI Toolkit versions below 6.0.0, a user who holds the "power" Splunk role could access and delete all relevant data in experiment history, including data associated with other users.

The vulnerability is possible because Splunk AI Toolkit does not preserve the trusted experiment scope when it processes caller-controlled query values before accessing restricted history data. For more information see Experiment Assistants ( ) in the Splunk documentation.

Affected versions
  • Splunk AI Toolkit 5.7 before 6.0.0

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Fixed versions
  • 6.0.0

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • 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.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

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