Medium severity · published Aug 19, 2026
CVE-2026-76393
Race Condition during Model Upload through the REST API in Splunk AI Toolkit
5.9
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Splunk AI Toolkit · Splunk
5.7 before 6.0.0 · source: vendor
AT
AI Toolkit · Splunk
5.7.0 before 6.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76393
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76393
Vendor Advisory
https://advisory.splunk.com/advisories/SVD-2026-0808
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