GHSA-2cm6-r77w-6g96

MLflow: trace API endpoints lack proper authorization validators

Description

In MLflow versions prior to 3.13.0, 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.

Paquets affectés

Références

• https://nvd.nist.gov/vuln/detail/CVE-2026-8147 ADVISORY
• https://github.com/mlflow/mlflow/pull/23014 WEB
• https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937 WEB
• https://github.com/mlflow/mlflow PACKAGE
• https://github.com/mlflow/mlflow/releases/tag/v3.13.0 WEB
• https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5 WEB

Sources