CVE-2026-2635CRITICAL 9.8EPSS p62.1%

CVE-2026-2635CVE-2026-2635

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.

Scoring

CVSS 3.09.8 (CRITICAL)
VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS1.13% probability of exploitation · percentile 62.1% · 2026-06-18T12:00:27Z
Published2026-02-20
Last modified2026-04-15

Underlying weaknesses· 1

CWE-1393

References

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

1

TypeTargetConfidenceTier
WeaknessUse of Default Passwordcwe-13930%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.