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

Quick assessment

Affected
mlflow mlflow/mlflow
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MLflow是MLflow开源的一个简化机器学习开发的平台，包括跟踪实验、将代码打包成可重复的运行以及共享和部署模型。 MLflow 3.9.0版本存在访问控制错误漏洞，该漏洞源于MLflow Assistant功能中ajax-api端点来源验证不当，允许远程攻击者利用恶意网页的跨域请求与受害者本地机器上运行的MLflow Assistant交互，绕过仅限回环的限制修改Assistant配置以启用完全访问，从而通过Claude Code子代理执行任意命令。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.41% · P33

Affected Version Matrix 1

VendorProduct Version RangeStatus
mlflow mlflow/mlflow unspecified< 3.10.0 affected
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I. Basic Information for CVE-2026-2611

Vulnerability Information
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Vulnerability Title
Improper Origin Validation in mlflow/mlflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5
Vulnerability Title
MLflow 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MLflow是MLflow开源的一个简化机器学习开发的平台，包括跟踪实验、将代码打包成可重复的运行以及共享和部署模型。 MLflow 3.9.0版本存在访问控制错误漏洞，该漏洞源于MLflow Assistant功能中ajax-api端点来源验证不当，允许远程攻击者利用恶意网页的跨域请求与受害者本地机器上运行的MLflow Assistant交互，绕过仅限回环的限制修改Assistant配置以启用完全访问，从而通过Claude Code子代理执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mlflow mlflow/mlflow unspecified ~ 3.10.0 -

II. Public POCs for CVE-2026-2611

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III. Intelligence Information for CVE-2026-2611

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Patches & Fixes for CVE-2026-2611 (1)

Vendor Advisories for CVE-2026-2611 (1)

IV. Related Vulnerabilities

Same product: mlflow/mlflow
Same vendor: mlflow
Same weakness: CWE-346

V. Comments for CVE-2026-2611

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