Vulnerability · Published Oct 29, 2025 · Assigned by zdi

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

High 8.1

In plain English

A high-severity security flaw in MLflow from MLflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.0)8.1High

Exploit odds (30 days)1.4%top 26.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	mlflow	2.22.0rc0	GHSA-6xj8-rrqx-r4cv
PyPI	mlflow	2.22.0rc0	PYSEC-2026-1642

Affected products (as reported)

Vendor	Product	Versions
MLflow	MLflow	2.21.0

Weakness: CWE-521 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-25-932 x_research-advisory
vendor-provided URL vendor-advisory