CVE-2026-8147Authorization Bypass in mlflow/mlflow

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5 ExploitThird Party Advisory
• https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937 Patch