CVE-2026-3198 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-3198MEDIUM

mlflow mlflow/mlflow — Improper Access Control in mlflow/mlflow

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  H  N  N    6.5   .0024   15.9     —

AFFECTED
  Product        Versions       Fixed
  mlflow/mlflow  unspecified –  —

TIMELINE
  Feb 25  Reserved by @huntr_ai
  Jun 2   EXPLOIT PUBLISHED — CVE-2026-3198 (mlflow/mlflow). Public exploit reference added.
  Jun 2   Published (CNA: @huntr_ai)

CWE-284 · CNA: @huntr_ai · CVSS v3.0 · 1 reference · NVD status: Analyzed

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
February 25, 2026	Reserved	Reserved by @huntr_ai
June 2, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-3198 (mlflow/mlflow). Public exploit reference added.
June 2, 2026	Published	Published (CNA: @huntr_ai)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
mlflow	mlflow/mlflow	—	unspecified	—

Weaknesses

CWE-284

References (1)

https://huntr.com/bounties/e57db731-97d3-40c3-a429-831ee959807f [Exploit, Third Party Advisory]

Authoritative record: CVE-2026-3198 at cve.org

Vendors: mlflow

Weaknesses: CWE-284

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-3198 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.