# CVE-2026-76393: Race Condition during Model Upload through the REST API in Splunk AI Toolkit

> CVE-2026-76393: Race Condition during Model Upload through the REST API in Splunk AI Toolkit. CVSS 5.9 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-76393
Last updated: 2026-08-26T20:18:00Z

- Published: 2026-08-19 21:35 UTC · Updated: 2026-08-26 20:18 UTC · Assigner: cisco
- CVSS: 5.9 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:L
- EPSS: 0.18%, 8th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: 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 vendors and products

- Splunk: Splunk AI Toolkit

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-76393)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-76393)
- [https://advisory.splunk.com/advisories/SVD-2026-0808](https://advisory.splunk.com/advisories/SVD-2026-0808)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-76393 · Markdown: https://rewindex.com/cve/CVE-2026-76393.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-76393 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:46.295Z