Auth bypass in Mlflow
CVE-2026-118624
MLflow Tracking Server Jobs Missing Authorization Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of MLflow. Authentication is required to exploit this vulnerability. The specific flaw exists within the _find_validator function. The issue results from the lack of authorization prior to allowing access to functionality. An attacker can leverage this vulnerability to disclose information in the context of the service account. Was ZDI-CAN-31894.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Mlflow — versions 3.13.0
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-26-840/ (x_research-advisory)
Frequently asked questions
- What is CVE-2026-118624?
- CVE-2026-118624 is a medium-severity vulnerability in Mlflow, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-11-04.
- How severe is CVE-2026-118624?
- Medium severity. CVSS v3 base score is 5.4 out of 10.