What’s Vulnerable › Vulnerabilities
CVE-2026-76393: Race Condition during Model Upload through the REST API in Splunk AI Toolkit
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-19 · updated 2026-08-26
- Weakness: CWE-362
Description
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 (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
How to fix
Upgrade to a fixed version: Splunk AI Toolkit 6.0.0. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-76393 or the next vulnerability affects your stack