Splunk AI Toolkit up to 5.x race condition

Summaryinfo

A vulnerability described as critical has been identified in Splunk AI Toolkit up to 5.x. Affected is an unknown function. Such manipulation leads to race condition. This vulnerability is traded as CVE-2026-76393. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Splunk AI Toolkit up to 5.x. It has been rated as critical. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at advisory.splunk.com. This vulnerability is handled as CVE-2026-76393 since 08/19/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 6.0.0 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Log Management Software

Vendor

• Splunk

Name

• AI Toolkit

Version

• 5.x

License

• free

CPE 2.3info

• 🔒

CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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