In the latest version of mlflow/mlflow, when the `basic-auth` app is enabled, tracing and assessment endpoints are not protected by permission validators. This allows any authenticated user, including those with `NO_PERMISSIONS` on the experiment, to read trace information and create assessments for traces they should not have access to. This vulnerability impacts confidentiality by exposing trace metadata and integrity by allowing unauthorized creation of assessments. Deployments using `mlflow server --app-name=basic-auth` are affected.

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History

Fri, 27 Mar 2026 16:45:00 +0000

Type Values Removed Values Added
Description In the latest version of mlflow/mlflow, when the `basic-auth` app is enabled, tracing and assessment endpoints are not protected by permission validators. This allows any authenticated user, including those with `NO_PERMISSIONS` on the experiment, to read trace information and create assessments for traces they should not have access to. This vulnerability impacts confidentiality by exposing trace metadata and integrity by allowing unauthorized creation of assessments. Deployments using `mlflow server --app-name=basic-auth` are affected.
Title Unauthorized Access to Tracing and Assessment Endpoints in mlflow/mlflow
Weaknesses CWE-200
References
Metrics cvssV3_0

{'score': 8.1, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2026-03-27T17:00:57.831Z

Reserved: 2025-12-30T21:47:03.954Z

Link: CVE-2025-15381

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-03-27T17:16:26.573

Modified: 2026-03-27T17:16:26.573

Link: CVE-2025-15381

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses