CVE-2026-33866

UNKNOWN 0.0

Authorization Bypass in MLflow AJAX Endpoint

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

10th

MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts. Due to missing access‑control validation, a user without permissions to a given experiment can directly query this endpoint and retrieve model artifacts they are not authorized to access. This issue affects MLflow version through 3.10.1

CWE	CWE-862
Vendor	mlflow
Product	mlflow
Published	Apr 7, 2026
Last Updated	Apr 14, 2026

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Affected Versions

Mlflow / Mlflow

0 ≤ 3.10.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mlflow/mlflow/pull/21708 cert.pl: https://cert.pl/en/posts/2026/04/CVE-2026-33865/ afine.com: https://afine.com/blogs/attacking-mlflow-how-ml-artifacts-become-attack-vectors

Credits

Sławomir Zakrzewski (AFINE)