CVE-2026-3198: CWE-284 Improper Access Control in mlflow mlflow/mlflow
MLflow version 3. 9. 0 with basic-auth enabled does not enforce proper authorization checks on several Gateway API list endpoints. Authenticated users can enumerate sensitive gateway secrets, endpoints, and model definitions without appropriate permissions. This improper access control vulnerability exposes confidential information such as API keys and proprietary model configurations to unauthorized users.
AI Analysis
Technical Summary
CVE-2026-3198 is an improper access control vulnerability (CWE-284) in MLflow 3.9.0 when using the basic-auth app name. The issue arises because the BEFORE_REQUEST_HANDLERS dictionary in the authentication module does not include authorization checks for the ListGatewaySecretInfos, ListGatewayEndpoints, and ListGatewayModelDefinitions API endpoints. As a result, any authenticated user, regardless of their permission level, can access and enumerate sensitive gateway-related information, including API keys, endpoint configurations, and model definitions. This vulnerability has a CVSS v3.0 score of 6.5, indicating a medium severity level.
Potential Impact
The vulnerability allows unauthorized disclosure of sensitive information such as API keys, endpoint configurations, and proprietary model definitions to any authenticated user. While it does not allow modification or denial of service, the exposure of these secrets can lead to further compromise or misuse of the MLflow environment and associated resources.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to MLflow instances using basic-auth to trusted users only and monitor for any unusual access patterns. Avoid exposing MLflow services publicly without additional access controls.
CVE-2026-3198: CWE-284 Improper Access Control in mlflow mlflow/mlflow
Description
MLflow version 3. 9. 0 with basic-auth enabled does not enforce proper authorization checks on several Gateway API list endpoints. Authenticated users can enumerate sensitive gateway secrets, endpoints, and model definitions without appropriate permissions. This improper access control vulnerability exposes confidential information such as API keys and proprietary model configurations to unauthorized users.
CVSS v3.0
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3198 is an improper access control vulnerability (CWE-284) in MLflow 3.9.0 when using the basic-auth app name. The issue arises because the BEFORE_REQUEST_HANDLERS dictionary in the authentication module does not include authorization checks for the ListGatewaySecretInfos, ListGatewayEndpoints, and ListGatewayModelDefinitions API endpoints. As a result, any authenticated user, regardless of their permission level, can access and enumerate sensitive gateway-related information, including API keys, endpoint configurations, and model definitions. This vulnerability has a CVSS v3.0 score of 6.5, indicating a medium severity level.
Potential Impact
The vulnerability allows unauthorized disclosure of sensitive information such as API keys, endpoint configurations, and proprietary model definitions to any authenticated user. While it does not allow modification or denial of service, the exposure of these secrets can lead to further compromise or misuse of the MLflow environment and associated resources.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to MLflow instances using basic-auth to trusted users only and monitor for any unusual access patterns. Avoid exposing MLflow services publicly without additional access controls.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- @huntr_ai
- Date Reserved
- 2026-02-25T12:41:24.059Z
- Cvss Version
- 3.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1e5294e29bf47b50827180
Added to database: 6/2/2026, 3:48:36 AM
Last enriched: 6/2/2026, 4:03:34 AM
Last updated: 6/2/2026, 4:56:57 AM
Views: 3
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