CVE-2026-8147

In MLflow versions prior to 3.14.0, when running with authentication enabled, the trace API endpoints lack proper authorization validators. This allows any authenticated user to bypass experiment-level authorization controls on all trace operations, including reading, deleting, and modifying traces on experiments they do not have permission to access. The issue arises from the `_before_request` handler, which does not register authorization validators for trace endpoints, resulting in requests proceeding without validation. This vulnerability can expose sensitive data, destroy audit logs, and allow unauthorized modifications.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector : AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937	Patch
https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5	Exploit Third Party Advisory
https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-02 09:16

Updated : 2026-07-06 16:46

NVD link : CVE-2026-8147

Mitre link : CVE-2026-8147

CVE.ORG link : CVE-2026-8147

JSON object : View

Products Affected

lfprojects

mlflow

CWE

CWE-284

Improper Access Control

NVD-CWE-noinfo

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