CVE-2026-76397Network attack vector

Cross-user history access and deletion via scope loss

Published Aug 19, 2026 · Updated Aug 20, 2026

Access control flaw in Splunk AI Toolkit 5.7 before 6.0.0 allows remote authenticated users with the power role to read or delete experiment history. Experiment-history REST processing fails to preserve the trusted experiment scope and uses caller-controlled query values to select restricted records. A power-role account is required; successful requests disclose or delete other users' experiment-history data without interrupting service.

CVSS severity8.1
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access control flaw in Splunk AI Toolkit 5.7 before 6.0.0 allows remote authenticated users with the power role to read or delete experiment history. Experiment-history REST processing fails to preserve the trusted experiment scope and uses caller-controlled query values to select restricted records. A power-role account is required; successful requests disclose or delete other users' experiment-history data without interrupting service.

The record

CVE
CVE-2026-76397
Published
Aug 19, 2026
Updated
Aug 20, 2026
Vendor
Splunk, Inc.
Product
Splunk AI Toolkit
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.7 <6.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Splunk, Inc. · Splunk AI Toolkitversion=5.7 <6.0.0

Published CVSS scores

8.1SplunkCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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