CVE-2026-33866
Published:April 07, 2026
Updated:April 26, 2026
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
Affected Packages
mlflow (CONDA):
Affected version(s) >=0.9.0.1 <3.11.1Fix Suggestion:
Update to version 3.11.1https://github.com/mlflow/mlflow.git (GITHUB):
Affected version(s) >=v0.2.0 <v3.11.1Fix Suggestion:
Update to version v3.11.1mlflow (PYTHON):
Affected version(s) >=0.0.1 <3.11.1Fix Suggestion:
Update to version 3.11.1Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Missing Authorization
EPSS
Base Score:
0.01
