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criticalCVSS 9NVD status: Modified

CVE-2026-2651

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

ComponentMLflow
Severitycritical (CVSS 9)
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Published (NVD)2026-05-25
Last modified2026-07-21
Affected versions
mlflow <= 3.10.1
Fixed insee the vendor advisory
WeaknessCWE-862CWE-1220
CISA KEVnot listed

NVD 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.

Does CVE-2026-2651 hit the version you run?Paste your docker-compose.yml, requirements.txt or package.json. The scanner checks your pinned versions against this CVE and every other one we track for MLflow.
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What to do

  • NVD lists no fixed version yet: follow the vendor advisory below and keep MLflow off the public internet until a fix ships.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

Read more

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