CVE-2026-2651: Lfprojects MLflow

Critical severity, CVSS 9.0. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the `--serve-artifacts` mode is enabled. The authorization logic does not enforce resource-level permission checks for `/mlflow-artifacts/mpu/*` endpoints, enabling attackers to overwrite artifacts belonging to other users. This can lead to unauthorized cross-user writes, model supply chain poisoning, and arbitrary code execution when compromised models are loaded. The issue is resolved in version 3.10.0.

Affected products

• Lfprojects MLflow: up to and including 3.10.1

Published 2026-05-25. Last modified 2026-07-21.