Critical 9.8Published Feb 20, 2026

CVE-2026-2635MLflow Use of Default Password Authentication Bypass Vulnerability

Updated under an hour ago (Oct 27, 2026, 9:20 PM ET)

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Every CVE for MLflow

Exploited in the last 30 days

MLflow Use of Default Password Authentication Bypass Vulnerability. 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. Was ZDI-CAN-28256.

CVSS: 9.8 CRITICAL (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-1393, CWE-798
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: zdi
NVD analysis: Deferred
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MLflow MLflow mlflow:mlflow (from the name)	3.4.0	CNA record
Red Hat Red Hat OpenShift AI (RHOAI) redhat:openshift_ai	Versions not stated	CISA ADP

References

References

https://www.zerodayinitiative.com/advisories/ZDI-26-111/	x-research-advisory
https://github.com/mlflow/mlflow/pull/19260	vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-2635
https://bugzilla.redhat.com/show_bug.cgi?id=2441514
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2635.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.