Medium [CVE-2026-76393] Race Condition during Model Upload through the REST API in Splunk AI Toolkit
This medium-severity Splunk advisory covers CVE-2026-76393 affecting Splunk AI Toolkit.
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Summary
In Splunk AI Toolkit versions below 6.0.0, a user who can upload models could overwrite a model being uploaded by another user by sending a concurrent upload request for the same model name, causing the resulting model lookup entry to reference attacker-controlled content.
The race condition is possible because Splunk AI Toolkit does not verify that the uploaded content belongs to the request that creates the model lookup entry. For more information see Troubleshoot the Splunk Machine Learning Toolkit ( ) in the Splunk documentation.
- Splunk AI Toolkit 5.7 before 6.0.0
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- 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.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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