MLflow vulnerable to remote code execution on unauthenticated servers via third-party scorer deserialization importing caller-placed artifact modules

影響: pip:mlflow >= 3.12.0rc0, < 3.17.0 → 3.17.0

MLflow 3.12.0 introduced registration and deserialization support for third-party scorers in OSS MLflow. During scorer deserialization, the server accepts a request-controlled Python module path beneath one of four allowed package prefixes, imports that module, obtains a request-controlled class, and instantiates it synchronously. An HTTP caller can combine this behavior with MLflow's built-in experiment, run, and artifact-upload endpoints: 1. Create an experiment whose local artifact location…

Read on GitHub Advisory Database

On 10/28/2026, 06:26 AM, GitHub Advisory Database published "MLflow vulnerable to remote code execution on unauthenticated servers via third-party scorer deserialization importing caller-placed artifact modules" (type: Advisory). Severity is "Critical" (critical). Related technologies: Python. CVE: CVE-2026-116692.