CVE-2026-33866CWE-862

Authorization Bypass in MLflow AJAX Endpoint

Medium · published April 7, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
30.1
In the wild
Unconfirmed
What it is

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 and retrieve model artifacts they are not authorized to access.

This issue affects MLflow version through 3.10.1

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00374 · 30.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-04-07T12:57Z
EPSS history
Timeline
  • 07 APR 12:57Z
    Authorization Bypass in MLflow AJAX Endpoint
    cvelistv5