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CVE-2026-3198

Improper Access Control in mlflow/mlflow

Published: Jun 2, 2026Updated: Jun 2, 2026 Sources: CVE List
NVD MITRE
6.5CVSS
MEDIUM

MLflow 3.9.0 with basic-auth (`--app-name basic-auth`) fails to enforce authorization checks for multiple Gateway API 'list' endpoints. Specifically, the `BEFORE_REQUEST_HANDLERS` dictionary in `mlflow/server/auth/__init__.py` does not include entries for `ListGatewaySecretInfos`, `ListGatewayEndpoints`, and `ListGatewayModelDefinitions`. This allows any authenticated user, regardless of their assigned permissions, to enumerate all gateway secrets, endpoints, and model definitions. This vulnerability exposes sensitive information, such as API keys, endpoint configurations, and proprietary model definitions, to unauthorized users.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Weaknesses

CWE-284CWE-284 Improper Access Control

Affected Products

mlflow/mlflow
mlflow

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://huntr.com/bounties/e57db731-97d3-40c3-a429-831ee959807f
huntr.com

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