MSC-2026-6389
Published:July 18, 2026
Updated:July 29, 2026
mlflow-ui is a malicious PyPI package impersonating an MLflow UI component. On installation it executes a payload that exfiltrates the installing machine's environment variables and harvests live cloud credentials. All published versions originate from the attacker; the package has been removed from PyPI.
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Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH