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CVE-2026-116690

CVE-2026-116690 · MLflow: Arbitrary file read on unauthenticated MLflow servers via prompt model version source

This page contains facts from public vulnerability sources. Check the original advisory before updating.

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. From 3.10.0 until 3.17.0, the prompt branch in _create_model_version() accepts schemeless relative sources because path validation runs only when a source has a URL scheme, and mlflow.prompt.is_prompt is interpreted by tag presence rather than a true value. A remote caller can store a server-local path as the model version artifact location and use /api/2.0/mlflow/model-versions/get-artifact to read files accessible to the MLflow server process. Default unauthenticated servers require no privileges, while basic-auth deployments are exposed to authenticated users who can create registered models. This issue is fixed in version 3.17.0.

CVSS 7.5 · High · Public exploit · Fix available

Published
Updated

Stack: python

Affected products and versions

  • mlflow

    Versions
    • >= 3.10.0, < 3.17.0: Affected

    No fix published

  • mlflow PyPI

    Versions
    • 3.10.0
    • 3.10.1
    • 3.11.0
    • 3.11.0rc0
    • 3.11.0rc1
    • 3.11.1
    • 3.12.0
    • 3.12.0rc0
    • 3.13.0
    • 3.13.0rc0
    • 3.14.0
    • 3.15.0
    • 3.15.1
    • 3.15.2
    • 3.16.0
    • 3.16.1
    Affected ranges
    • ECOSYSTEM: ≥ 3.10.0, < 3.17.0

    Update to 3.17.0

Original sources

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