CVE-2026-2611 CRITICAL

CVE-2026-2611: Improper Origin Validation in mlflow/mlflow

Vendor Mlflow
Product mlflow/mlflow
Weakness CWE-346 · Origin validation
Published May 19, 2026
Last update May 19, 2026

CVSS base score

9.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote attacker to exploit cross-origin requests from a malicious webpage to interact with the MLflow Assistant running on a victim's local machine. By bypassing the loopback-only restriction, the attacker can modify the Assistant's configuration to enable full access, which in turn allows the execution of arbitrary commands via the Claude Code sub-agent. This issue is resolved in version 3.10.0.

Key dates

02Disclosure timeline

May 19, 2026 CVE published
May 19, 2026 Record updated