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.

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History

Thu, 28 May 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-940
References
Metrics threat_severity

None

cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

threat_severity

Critical


Tue, 26 May 2026 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Lfprojects
Lfprojects mlflow
CPEs cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*
Vendors & Products Lfprojects
Lfprojects mlflow

Tue, 19 May 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 19 May 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Mlflow
Mlflow mlflow/mlflow
Vendors & Products Mlflow
Mlflow mlflow/mlflow

Tue, 19 May 2026 10:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Improper Origin Validation in mlflow/mlflow
Weaknesses CWE-346
References
Metrics cvssV3_0

{'score': 9.6, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2026-05-19T13:26:31.829Z

Reserved: 2026-02-17T02:36:47.412Z

Link: CVE-2026-2611

cve-icon Vulnrichment

Updated: 2026-05-19T13:26:28.318Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-19T10:16:22.983

Modified: 2026-05-22T21:00:30.900

Link: CVE-2026-2611

cve-icon Redhat

Severity : Critical

Publid Date: 2026-05-19T09:16:42Z

Links: CVE-2026-2611 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-28T02:15:04Z

Weaknesses