CVE-2026-2651CRITICAL 9.0EPSS p29.7%

CVE-2026-2651CVE-2026-2651

lfprojects / mlflow

Description

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.

Scoring

CVSS 3.09.0 (CRITICAL)
VectorCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS0.38% probability of exploitation · percentile 29.7% · 2026-06-18T12:00:27Z
Published2026-05-25
Last modified2026-06-04

Underlying weaknesses· 1

CWE-862

References

  1. https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f
  2. https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc
  3. https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc

1

TypeTargetConfidenceTier
WeaknessMissing Authorizationcwe-8620%live

Related by meaning· 6

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