CVE-2026-8147

A flaw was found in MLflow. When authentication is enabled, any authenticated user can bypass experiment-level authorization controls on trace API endpoints. This is due to missing authorization validators, allowing unauthorized reading, deleting, and modifying of traces. This vulnerability can...

CVE-2026-8147 Authorization Bypass in mlflow/mlflow

In MLflow versions prior to 3.14.0, when running with authentication enabled, the trace API endpoints lack proper authorization validators. This allows any authenticated user to bypass experiment-level authorization controls on all trace operations, including reading, deleting, and modifying trac...

Authorization bypass on all trace endpoints when auth is enabled

Description When MLflow runs with auth enabled, the trace API endpoints don't have authorization validators registered. The beforerequest handler checks each request against BEFOREREQUESTHANDLERS — experiments, runs, models all have entries there, but traces have zero entries. When no validator i...