CVE-2026-76391 Improper Privilege Management through Agent Run History in Splunk AI Toolkit

High 8.3 Published 19 Aug 2026 Updated 26 Aug 2026

Unprivileged users can execute searches with system-level privileges, accessing or deleting other users' data via Agent Run History.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-76391?

CVE-2026-76391 is a high-severity vulnerability in Splunk AI Toolkit, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-863

Which versions are affected by CVE-2026-76391?

It affects 1 product.

Products include Splunk Ai Toolkit.

How do I fix CVE-2026-76391?

No fix has been published for CVE-2026-76391 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-76391 being exploited?

There is no known exploitation of CVE-2026-76391 in the wild and no public exploit code.

Sources

Also known as GHSA-g2mq-q5g6-g67q.