CVE-2026-2635
Received Received - Intake
Authentication Bypass in MLflow via Default Password Enables RCE

Publication date: 2026-02-20

Last updated on: 2026-02-20

Assigner: Zero Day Initiative

Description
MLflow Use of Default Password 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 basic_auth.ini file. The file contains hard-coded default credentials. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of the administrator. Was ZDI-CAN-28256.
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Meta Information
Published
2026-02-20
Last Modified
2026-02-20
Generated
2026-06-16
AI Q&A
2026-02-21
EPSS Evaluated
2026-06-15
NVD
CVE-2026-2635
EUVD
EUVD-2026-7766
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mlflow mlflow *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-1393 The product uses default passwords for potentially critical functionality.
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Executive Summary

This vulnerability in MLflow involves the use of default password authentication bypass. Specifically, the basic_auth.ini file contains hard-coded default credentials that allow remote attackers to bypass authentication without needing any credentials.

An attacker exploiting this flaw can gain unauthorized access and execute arbitrary code with administrator privileges.

Impact Analysis

The vulnerability can have severe impacts as it allows remote attackers to bypass authentication and gain administrator-level access.

  • Unauthorized access to sensitive data or systems.
  • Execution of arbitrary code with administrative privileges.
  • Potential full compromise of the affected MLflow installation.
Compliance Impact

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Detection Guidance

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Mitigation Strategies

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