CVE-2026-2635 PUBLISHED

MLflow Use of Default Password Authentication Bypass Vulnerability

Assigner: zdi
Reserved: 17.02.2026 Published: 20.02.2026 Updated: 20.02.2026

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.

Metrics

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Product Status

Vendor MLflow
Product MLflow
Versions Default: unknown
  • Version 3.4.0 is affected

References

Problem Types

  • CWE-1393: Use of Default Password CWE