Free AI Safety Workshop — in collaboration with explainx.aiSave your seat
AgentbeamBeta
AI agent vulnerability · MLflow

CVE-2026-33866: MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint

mediumCVSS 4.0 5.3 · 3.1 4.3GHSA-46r5-x6jq-v8g6

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

Published Apr 7, 2026 · Updated Jun 6, 2026

Affected packages

mlflow

Ecosystem
PyPI
Affected
<= 3.10.1
Fixed in
3.11.0rc0
Check
pip show mlflow

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

More MLflow vulnerabilities

All MLflow entries