EUVD-2026-31210
GHSA-w5xq-c4pf-ghq7
CVSS VectorNVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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3DescriptionNVD
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.
AnalysisAI
Missing post-response authorization filtering in MLflow's self-hosted server exposes all registered model version metadata to any authenticated user, regardless of their per-model permission level. Both the REST API endpoint SearchModelVersions and the GraphQL query mlflowSearchModelVersions were absent from the authorization middleware chains in versions up to 3.9.0, allowing a low-privilege authenticated user to enumerate model names, version descriptions, source artifact URIs, tags, and other metadata across all registered models in multi-tenant deployments. …
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