CVE-2026-76395 Deserialization in Splunk AI Toolkit
A user with the power role can execute arbitrary code on the Splunk server by uploading a crafted model file with malicious pickle data.
- 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-2026-76395?
CVE-2026-76395 is a high-severity unsafe deserialization 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 holds the "power" Splunk role could execute arbitrary code on the Splunk server by loading a model file containing crafted sparse matrix data. The deserialization of untrusted data is possible because a model codec in Splunk AI Toolkit deserializes sparse matrix data without guarding against embedded pickle content. For more information see Troubleshoot the Splunk Machine Learning Toolkit (https://help.splunk.com/en/splunk-cloud-platform/apply-machine-learning/machine-learning-toolkit-user-guide/5.5.0/troubleshooting-mltk/troubleshoot-the-splunk-machine-learning-toolkit) in the Splunk documentation.
Weakness: CWE-502
Which versions are affected by CVE-2026-76395?
It affects 1 product.
Products include Splunk Ai Toolkit.
How do I fix CVE-2026-76395?
No fix has been published for CVE-2026-76395 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-76395 being exploited?
There is no known exploitation of CVE-2026-76395 in the wild and no public exploit code.
Other vulnerabilities in Splunk AI Toolkit
- CVE-2026-20266 OS Command Injection in the btool Configuration Helper in Splunk AI Toolkit
- CVE-2026-76391 Improper Privilege Management through Agent Run History in Splunk AI Toolkit
- CVE-2026-76394 Missing Authorization in Container and Connection Management 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
- CVE-2026-76399 Incorrect Permission Assignment for Scheduled Searches in Splunk AI Toolkit
Sources
Also known as GHSA-wmwx-pqh3-xv86.