CVE-2026-2635

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/mlflow/mlflow/pull/19260
https://www.zerodayinitiative.com/advisories/ZDI-26-111/

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) Vulnerabilidad de Omisión de Autenticación por Uso de Contraseña Predeterminada en MLflow. Esta vulnerabilidad permite a atacantes remotos omitir la autenticación en instalaciones afectadas de MLflow. No es necesario autenticase para explotar esta vulnerabilidad. La falla específica existe en el archivo basic_auth.ini. El archivo contiene credenciales predeterminadas almacenadas en el código. Un atacante puede aprovechar esta vulnerabilidad para omitir la autenticación y ejecutar código arbitrario en el contexto del administrador. Fue ZDI-CAN-28256.

20 Feb 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-20 23:16

Updated : 2026-06-17 10:31

NVD link : CVE-2026-2635

Mitre link : CVE-2026-2635

CVE.ORG link : CVE-2026-2635

JSON object : View

Products Affected

No product.

CWE

CWE-1393

Use of Default Password

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