CVE WatchJul 21, 2026

CVE-2026-2651

A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the `--serve-artifacts`

CVSS

9.0

Critical

EPSS

0.3%

p28

KEV

—

Exploit Today

0-100

Published: May 25, 2026 · Last modified: Jul 21, 2026 · CWE-862 · CWE-1220

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-08-182026-09-15

Technical 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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-540768.1 HIG

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