# CVE-2026-76397: Improper Access Control in Experiment History through the REST API in Splunk AI Toolkit

> CVE-2026-76397: Improper Access Control in Experiment History through the REST API in Splunk AI Toolkit. CVSS 8.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-76397
Last updated: 2026-08-21T18:56:07Z

- Published: 2026-08-19 21:35 UTC · Updated: 2026-08-21 18:56 UTC · Assigner: cisco
- CVSS: 8.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS: 0.35%, 28th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-639

## Description

In Splunk AI Toolkit versions below 6.0.0, a user who holds the "power" Splunk role could access and delete all relevant data in experiment history, including data associated with other users. The vulnerability is possible because Splunk AI Toolkit does not preserve the trusted experiment scope when it processes caller-controlled query values before accessing restricted history data. For more information see Experiment Assistants (https://help.splunk.com/en/splunk-cloud-platform/apply-machine-learning/use-ai-toolkit/5.6.4/experiment-assistants) 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-2026-76397)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-76397)
- [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-2026-76397 · Markdown: https://rewindex.com/cve/CVE-2026-76397.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-76397 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:15.968Z