TI-2026-02250 Aliases CVE-2026-2635 GHSA-gq3w-7jj3-x7gr

MLflow Use of Default Password Authentication Bypass Vulnerability

MEDIUM 51CWE-1393Published 2026-02-20 · Updated 2026-07-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01077 65th percentileScored 2026-11-07

Fix Fixed mlflow (PyPI): 3.8.0rc0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
MLflow	MLflow	3.4.0	—	No fix listed	CNA
—	mlflow (PyPI)	before 3.8.0rc0	3.8.0rc0	Patch available	GHSA-gq3w-7jj3-x7gr

MLflow VendorMLflow Affected 3.4.0 Fixed in — No fix listed CNA
mlflow (PyPI) Vendor— Affected before 3.8.0rc0 Fixed in 3.8.0rc0 Patch available GHSA-gq3w-7jj3-x7gr

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:lfprojects:mlflow::::::::	—	—	MLflow

cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:* Versions — — ·MLflow

Remediation

Fix · GHSA-gq3w-7jj3-x7gr mlflow (PyPI) Fixed in 3.8.0rc0 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2026-02-20
MLflow — vendor-provided URL
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2026-01690 Path traversal in MLflowPriority MEDIUM 41
Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 1 product

Red Hat OpenShift AI (RHOAI)

Timeline

2026-10-02 Threatist record created from CVE-2026-2635
2026-10-03 Alias added: GHSA-gq3w-7jj3-x7gr

References

Advisory 2

Other 5

TI-2026-46366 Server-side request forgery in mlflow KEVCVSS 3.1CRITICAL 9.3
TI-2023-03518 Absolute Path Traversal in mlflow/mlflow CVSS 3.1CRITICAL 10.0
TI-2023-01113 Path Traversal: '\..\filename' in mlflow/mlflow CVSS 3.1CRITICAL 9.8
TI-2025-31759 Redis Lua Use-After-Free may lead to remote code execution CVSS 3.1CRITICAL 10.0
TI-2026-81527 Code execution via scorer deserialization in MLflow servers CVSS 3.1CRITICAL 9.8
TI-2025-14028 Command Injection in mlflow/mlflow CVSS 3.1CRITICAL 10.0

See all 175 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences