Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-21T03:49:38 mlflow: mlflow: Information Disclosure via improper authorization checks 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CWE-639

In mlflow/mlflow versions up to 3.9.0, the `SearchModelVersions` REST API endpoint and the `mlflowSearchModelVersions` GraphQL query lack proper per-model authorization checks when basic authentication is enabled. This allows any authenticated user to enumerate all model versions across all registered models, regardless of their permission level. The issue arises due to the absence of `SearchModelVersions` in the `BEFORE_REQUEST_VALIDATORS` and `AFTER_REQUEST_HANDLERS` for the REST API, and its omission from `GraphQLAuthorizationMiddleware.PROTECTED_FIELDS` for GraphQL. This vulnerability can expose sensitive information such as model names, version descriptions, source URIs, tags, and other metadata, potentially revealing proprietary or confidential details in multi-tenant environments. The issue is resolved in version 3.10.0.

A flaw was found in mlflow. An authenticated user could exploit a lack of proper authorization checks in the SearchModelVersions REST API and mlflowSearchModelVersions GraphQL query. This flaw allows them to enumerate all model versions across all registered models, potentially exposing sensitive information such as model names, descriptions, and other metadata. This could lead to the disclosure of proprietary or confidential details in multi-tenant environments.

Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-mlflow-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-pipeline-runtime-datascience-cpu-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-pipeline-runtime-tensorflow-cuda-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-th06-cpu-torch210-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-th06-cuda130-torch210-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-th06-rocm64-torch291-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-training-cuda128-torch29-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-jupyter-datascience-cpu-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-jupyter-pytorch-cuda-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9 Red Hat OpenShift AI (RHOAI) Not affected rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9 https://www.cve.org/CVERecord?id=CVE-2026-2734 https://nvd.nist.gov/vuln/detail/CVE-2026-2734 https://github.com/mlflow/mlflow/commit/6989066af33fdcb03588fd71a1a67f8fc5ef12c9 https://huntr.com/bounties/d632f783-b2c7-4a3b-af5e-1d693e841c08