CVE-2026-76391Network attack vector

Privilege escalation via system-token session replacement

Published Aug 19, 2026 · Updated Aug 19, 2026

Improper authorization in Splunk AI Toolkit before 6.0.0 allows remote authenticated users to run searches with system privileges. The Agent Run History handler replaces the caller's session key with a system authentication token before performing search operations. Any user below the power or admin roles can access relevant data, affect system integrity, and read or delete other users' search jobs.

CVSS severity8.3
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Splunk AI Toolkit before 6.0.0 allows remote authenticated users to run searches with system privileges. The Agent Run History handler replaces the caller's session key with a system authentication token before performing search operations. Any user below the power or admin roles can access relevant data, affect system integrity, and read or delete other users' search jobs.

The record

CVE
CVE-2026-76391
Published
Aug 19, 2026
Updated
Aug 19, 2026
Vendor
Splunk, Inc.
Product
Splunk AI Toolkit
Classifications
CWE-863, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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

8.3SplunkCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

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-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

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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