p PatchFirst

CVE-2026-8147

CVE-2026-8147 · Authorization Bypass in mlflow/mlflow

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

In MLflow versions prior to 3.14.0, when running with authentication enabled, the trace API endpoints lack proper authorization validators. This allows any authenticated user to bypass experiment-level authorization controls on all trace operations, including reading, deleting, and modifying traces on experiments they do not have permission to access. The issue arises from the `_before_request` handler, which does not register authorization validators for trace endpoints, resulting in requests proceeding without validation. This vulnerability can expose sensitive data, destroy audit logs, and allow unauthorized modifications.

CVSS 8.1 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • mlflow/mlflow

    Versions
    • ≥ unspecified, < 3.14.0: Affected (custom)

    Update to 3.14.0

  • mlflow PyPI

    Versions
    • 2.14.0
    • 2.14.0rc0
    • 2.14.1
    • 2.14.2
    • 2.14.2.dev0
    • 2.14.3
    • 2.15.0
    • 2.15.0rc0
    • 2.15.1
    • 2.16.0
    • 2.16.1
    • 2.16.2
    • 2.17.0
    • 2.17.0rc0
    • 2.17.1
    • 2.17.2
    • 2.18.0
    • 2.18.0rc0
    • 2.19.0
    • 2.19.0rc0
    • 2.20.0
    • 2.20.0rc0
    • 2.20.1
    • 2.20.2
    • 2.20.3
    • 2.20.4
    • 2.21.0
    • 2.21.0rc0
    • 2.21.1
    • 2.21.2
    • 2.21.3
    • 2.22.0
    • 2.22.0rc0
    • 2.22.1
    • 2.22.2
    • 2.22.3
    • 2.22.4
    • 2.22.5
    • 3.0.0
    • 3.0.0rc0
    • 3.0.0rc1
    • 3.0.0rc2
    • 3.0.0rc3
    • 3.0.1
    • 3.1.0
    • 3.1.0rc0
    • 3.1.1
    • 3.1.2
    • 3.1.3
    • 3.1.4
    • 3.10.0
    • 3.10.0rc0
    • 3.10.1
    • 3.11.0
    • 3.11.0rc0
    • 3.11.0rc1
    • 3.11.1
    • 3.12.0
    • 3.12.0rc0
    • 3.2.0
    • 3.2.0rc0
    • 3.3.0
    • 3.3.0rc0
    • 3.3.1
    • 3.3.2
    • 3.4.0
    • 3.4.0rc0
    • 3.5.0
    • 3.5.0rc0
    • 3.5.1
    • 3.6.0
    • 3.6.0rc0
    • 3.7.0
    • 3.7.0rc0
    • 3.8.0
    • 3.8.0rc0
    • 3.8.1
    • 3.9.0
    • 3.9.0rc0
    Affected ranges
    • ECOSYSTEM: ≥ 2.14.0rc0, < 3.13.0rc0

    Update to 3.13.0rc0

Original sources

Check your server →