What is CVE-2026-3198?

CVE-2026-3198 is a medium-severity vulnerability in Lfprojects Mlflow, classified under Improper Access Control. CVSS score: 6.5/10. Published 2026-06-02.

How severe is CVE-2026-3198?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Lfprojects Mlflow

CVE-2026-3198

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 inc…

EPSS: 0.000 (7.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Lfprojects Mlflow — versions 3.9.0
Mlflow Mlflow/mlflow — versions unspecified

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

security@huntr.dev (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-3198?: CVE-2026-3198 is a medium-severity vulnerability in Lfprojects Mlflow, classified under Improper Access Control. CVSS score: 6.5/10. Published 2026-06-02.
How severe is CVE-2026-3198?: Medium severity. CVSS v3 base score is 6.5 out of 10.