PT-2026-43005 · Mlflow · Mlflow/Mlflow

Published 2026-05-25 · Updated 2026-05-25 · CVE-2026-2651

Mitre

CVSS v3.1

9.0

Critical

Base vector

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

A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the --serve-artifacts mode is enabled. The authorization logic does not enforce resource-level permission checks for /mlflow-artifacts/mpu/* endpoints, enabling attackers to overwrite artifacts belonging to other users. This can lead to unauthorized cross-user writes, model supply chain poisoning, and arbitrary code execution when compromised models are loaded. The issue is resolved in version 3.10.0.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-2651

Affected Products

Mlflow/Mlflow

References · 2

• https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f · Note
• https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc · Note