---
id: CVE-2026-3198
aliases:
  - GHSA-r5m9-wm49-959f
  - BIT-mlflow-2026-3198
title: >-
  MLflow: Any authenticated user can enumerate all gateway secrets, endpoints,
  and model definitions
summary: >-
  MLflow: Any authenticated user can enumerate all gateway secrets, endpoints,
  and model definitions
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
vendor: mlflow
product: mlflow
ecosystem: pip
affected:
  - mlflow < 3.11.0rc0
patched:
  - mlflow 3.11.0rc0
published: '2026-06-02'
updated: '2026-07-09'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-r5m9-wm49-959f'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-3198'
  - url: >-
      https://github.com/mlflow/mlflow/commit/6989066af33fdcb03588fd71a1a67f8fc5ef12c9
  - url: 'https://github.com/mlflow/mlflow'
  - url: 'https://huntr.com/bounties/e57db731-97d3-40c3-a429-831ee959807f'
tags:
  - osv
  - pip
epss: 0.00244
epssPercentile: 0.15857
ingestedAt: '2026-07-10T13:49:10.960Z'
---

## Overview

MLflow 3.9.0 with basic-auth (`--app-name basic-auth`) fails to enforce authorization checks for multiple Gateway API 'list' endpoints. Specifically, the `BEFORE_REQUEST_HANDLERS` dictionary in `mlflow/server/auth/__init__.py` does not include entries for `ListGatewaySecretInfos`, `ListGatewayEndpoints`, and `ListGatewayModelDefinitions`. This allows any authenticated user, regardless of their assigned permissions, to enumerate all gateway secrets, endpoints, and model definitions. This vulnerability exposes sensitive information, such as API keys, endpoint configurations, and proprietary model definitions, to unauthorized users.

## Affected packages

- `mlflow < 3.11.0rc0`

## Remediation

Upgrade to a patched release:

- `mlflow 3.11.0rc0`