CVE-2026-3198: MLflow 3.9.0 with basic-auth (`--app-name basic-auth`) fails to enforce authorization checks for multiple Gateway API 'l
highvulnerability
security
Summary
MLflow 3.9.0 with basic authentication has a missing authorization check bug where three Gateway API endpoints (ListGatewaySecretInfos, ListGatewayEndpoints, ListGatewayModelDefinitions) don't validate user permissions properly, allowing any logged-in user to see sensitive information like API keys and model configurations they shouldn't access.
Vulnerability Details
EPSS (30-day exploit probability)
EPSS: 0.0%
Disclosure Date
June 2, 2026
Classification
Attack Type
Data Extraction
Attack SophisticationTrivial
Impact (CIA+S)
confidentiality
AI Component TargetedAPI
Taxonomy References
CWE (Weakness Type)
Affected Vendors
Related Issues
Monthly digest — independent AI security research
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-3198
First tracked: June 2, 2026 at 02:08 AM
Classified by LLM (prompt v3) · confidence: 95%