Race Condition during Model Upload through the REST API in Splunk AI Toolkit
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
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 (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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Splunk AI Toolkit (Splunk) Fixed in 6.0.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Splunk AI Toolkit 6.0.0
7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2026-53450 Remote Code Execution (RCE) through Deserialization of Untrusted Data in the Model Loading REST API in Splunk AI ToolkitPriority MEDIUM 41
- TI-2026-53449 Missing Authorization in Container and Connection Management through the REST API in Splunk AI ToolkitPriority LOW 38
- TI-2026-53446 Improper Privilege Management through Agent Run History in Splunk AI ToolkitPriority LOW 38
Timeline
- 2026-10-02 Threatist record created from CVE-2026-76393
- 2026-10-03 Alias added: GHSA-qh4m-xcwc-wcgw
References
More Splunk Ai Toolkit vulnerabilities
- TI-2026-16455 OS Command Injection in the btool Configuration Helper in Splunk AI Toolkit CVSS 3.1CRITICAL 9.1
- TI-2026-53450 Remote Code Execution (RCE) through Deserialization of Untrusted Data in the Model Loading REST API in Splunk AI Toolkit CVSS 3.1HIGH 8.8
- TI-2026-53449 Missing Authorization in Container and Connection Management through the REST API in Splunk AI Toolkit CVSS 3.1HIGH 8.3
- TI-2026-53446 Improper Privilege Management through Agent Run History in Splunk AI Toolkit CVSS 3.1HIGH 8.3
- TI-2026-53454 Incorrect Permission Assignment for Scheduled Searches in Splunk AI Toolkit CVSS 3.1HIGH 8.1
- TI-2026-53452 Improper Access Control in Experiment History through the REST API in Splunk AI Toolkit CVSS 3.1HIGH 8.1
Sources
- CVE-2026-76393 · CVE Program
- CVE-2026-76393 · NVD
- FIRST EPSS
- GHSA-qh4m-xcwc-wcgw · GitHub Advisory Database · CC BY 4.0
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