CVE-2026-76395: Splunk Ai Toolkit

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

In Splunk AI Toolkit versions below 6.0.0, a user who holds the "power" Splunk role could execute arbitrary code on the Splunk server by loading a model file containing crafted sparse matrix data. The deserialization of untrusted data is possible because a model codec in Splunk AI Toolkit deserializes sparse matrix data without guarding against embedded pickle content. 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.

Affected products

• Splunk Ai Toolkit: from 5.7.0, before 6.0.0 (fixed in 6.0.0)

Published 2026-08-19. Last modified 2026-08-26.