---
id: CVE-2026-2033
aliases:
  - GHSA-q2r8-vmq7-fpx2
  - PYSEC-2026-2658
title: >-
  MLflow Tracking Server Artifact Handler Directory Traversal Remote Code
  Execution Vulnerability
summary: >-
  MLflow Tracking Server Artifact Handler Directory Traversal Remote Code
  Execution Vulnerability
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: mlflow
product: mlflow
ecosystem: pip
affected:
  - mlflow < 3.8.0rc0
patched:
  - mlflow 3.8.0rc0
published: '2026-02-21'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:59.539072984Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-q2r8-vmq7-fpx2'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-2033'
  - url: 'https://github.com/mlflow/mlflow/pull/19260'
  - url: >-
      https://github.com/mlflow/mlflow/commit/5bf2ec2bd4222a18d78631183ac7f6b752afe8a4
  - url: 'https://github.com/mlflow/mlflow'
  - url: 'https://github.com/mlflow/mlflow/releases/tag/v3.8.0rc0'
  - url: 'https://www.zerodayinitiative.com/advisories/ZDI-26-105'
tags:
  - osv
  - pip
epss: 0.0169
epssPercentile: 0.76069
zeroDay: true
ingestedAt: '2026-07-13T18:58:01.773Z'
---

## Overview

MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability. 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.

## Affected packages

- `mlflow < 3.8.0rc0`

## Remediation

Upgrade to a patched release:

- `mlflow 3.8.0rc0`