Auth bypass in Splunk Ai Toolkit
CVE-2026-76391
In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the "admin" or "power" Splunk roles could run searches with system-level privileges, access all relevant data, affect system integrity, and read or delete search jobs belonging to other users through Agent Run History. The improper privilege management is possible because the Agent Run History handler replaces the calling user session key with a system authentication token before it performs search operations. For more information see AI Toolkit Agent Launchpad (https://help.splunk.com/en/splunk-enterprise/apply-machine-learning/use-ai-toolkit/6.0.0/ai-toolkit-connections-containers-and-agents/ai-toolkit-agent-launchpad) in the Splunk documentation.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (38.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.001
Affected products
Weakness classification (CWE)
References
- advisory.splunk.com/advisories/SVD-2026-0808 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-76391?
- CVE-2026-76391 is a high-severity vulnerability in Splunk Ai Toolkit, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-08-19.
- How severe is CVE-2026-76391?
- High severity. CVSS v3 base score is 8.3 out of 10.