CVE-2026-2734
In mlflow/mlflow versions up to 3.9.0, the REST API endpoint and the GraphQL query lack proper per-model authorization checks when basic authentication is enabled.
Published May 21, 2026 · updated Jul 23, 2026 · lfprojects mlflow
In mlflow/mlflow versions up to 3.9.0, the REST API endpoint and the 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 in the and for the REST API, and its omission from 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.
Code
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Timeline
Detection, updates, and resolution for this record.
May 21, 2026 · NIST NVD
Detected
In mlflow/mlflow versions up to 3.9.0, the REST API endpoint and the 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 in the and for the REST API, and its omission from for GraphQL
Jul 23, 2026 · NIST NVD
Updated
In mlflow/mlflow versions up to 3.9.0, the REST API endpoint and the 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 in the and for the REST API, and its omission from for GraphQL
Affected
- cpe lfprojects/mlflowversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-2734
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-2734
In mlflow/mlflow versions up to 3.9.0, the REST API endpoint and the GraphQL query lack proper per-model authorization checks when basic authentication is enabled. This allows any authenticated user to enumerate all model versions
nvd.nist.gov