CVE-2026-33866

MediumCVSS 4.3/10Last modified Jun 17, 2026

Description

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

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-862

Affected software

Vendor	Product	Versions
Mlflow	Mlflow	<= 3.10.1

References

https://afine.com/blogs/attacking-mlflow-how-ml-artifacts-become-attack-vectorsExploit, Third Party Advisory
https://cert.pl/en/posts/2026/04/CVE-2026-33865/Third Party Advisory
https://github.com/mlflow/mlflow/pull/21708Issue Tracking, Patch

Timeline

Published: Apr 7, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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