CVE-2026-2635
MLflow Use of Default Password Authentication Bypass Vulnerability
9.8
CRITICAL
CVSS 3.1
EPSS 1.5%
Description
This vulnerability allows remote attackers to bypass authentication on affected installations of MLflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the basic_auth.ini file. The file contains hard-coded default credentials. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of the administrator.
How to fix CVE-2026-2635
To remediate CVE-2026-2635, upgrade the affected package to a fixed version below.
- —upgrade to 3.8.0rc0 or later
Is CVE-2026-2635 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.8.0rc0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |