CVE-2026-2651
Missing Authorization Validation in mlflow/mlflow
CVSS Score
9.0
EPSS Score
0.1%
EPSS Percentile
16th
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.
| CWE | CWE-862 |
| Vendor | mlflow |
| Product | mlflow/mlflow |
| Published | May 25, 2026 |
| Last Updated | May 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Affected Versions
mlflow / mlflow/mlflow
unspecified < 3.10.0