MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability

February 13th, 2026
ZDI-26-105 ZDI-CAN-26649

CVE ID

CVE-2026-2033

CVSS Score

8.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

MLflow

Affected Products

MLflow

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of MLflow Tracking Server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of artifact file paths. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the service account.

Additional Details

MLflow has issued an update to correct this vulnerability. More details can be found at:
https://github.com/mlflow/mlflow/pull/19260

Disclosure Timeline

  • 2025-07-31 - Vulnerability reported to vendor
  • 2026-02-13 - Coordinated public release of advisory
  • 2026-02-13 - Advisory Updated

Credit

Muhammad Fadilullah Dzaki

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