9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2025-11200

CVE-2025-11200: MLflow Weak Password Requirements Authentication Bypass Vulnerability

MLflow Weak Password Requirements Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of MLflow. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of passwords. The issue results from weak password requirements. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-26916.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2025-11200

CVE-2025-11200:

9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
mlflow	pip	< 2.22.0rc0	2.22.0rc0

Technical Details

Vulnerability Intelligence
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Root Cause Analysis

The vulnerability is a weak password requirement allowing for an authentication bypass. The root cause is the lack of server-side validation for password length during user creation. The commit 1f74f3f24d8273927b8db392c23e108576936c54 directly addresses this flaw. The analysis of the patch reveals that the mlflow.server.auth.sqlalchemy_store.SqlAlchemyStore.create_user function was modified to include a call to a new _validate_password function. Before this change, create_user would proceed to hash and store any password provided for a new user, regardless of its length. This allowed an attacker to create an account with an easily guessable, short, or even empty password, effectively bypassing authentication. The vulnerable function is create_user as it's the point where the insecure password is processed and stored.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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