What is CVE-2026-33866?

CVE-2026-33866 is a medium-severity vulnerability in Lfprojects Mlflow, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-04-07.

How severe is CVE-2026-33866?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Lfprojects Mlflow

CVE-2026-33866

MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts. Due to missing access‑control validation, a user without permissions to a given experiment can directly query this endpoint…

Vulnerability class: Broken Access Control

EPSS: 0.004 (28.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Lfprojects Mlflow
Mlflow — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

cvd@cert.pl (Patch, patch, Issue Tracking)
cvd@cert.pl (Third Party Advisory, third-party-advisory)
cvd@cert.pl (Exploit, technical-description, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2026-33866?: CVE-2026-33866 is a medium-severity vulnerability in Lfprojects Mlflow, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-04-07.
How severe is CVE-2026-33866?: Medium severity. CVSS v3 base score is 4.3 out of 10.