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CVE-2026-116690— MLflow: Arbitrary file read on unauthenticated MLflow servers via prompt model version source

Quick assessment

Affected
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 是一个面向智能体、大型语言模型和机器学习模型的开源 AI 工程平台。在 3.10.0 至 3.17.0 版本中， 函数中的提示词（prompt）分支会接受不带协议前缀的相对源路径，因为路径验证仅在源路径包含 URL 协议时才执行；同时， 的判断依据是标签是否存在，而非其真实布尔值。远程调用者可将服务器本地路径存储为模型版本的工件位置，并通过 接口读取 MLflow 服务器进程可访问的文件。默认未启用身份验证的服务器无需任何权限即可被利用，而启用基本认证（basic-auth）的部署则暴露于可创建已注册

CVSS 7.5 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
mlflow mlflow >= 3.10.0, < 3.17.0 affected
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I. Basic Information for CVE-2026-116690

Vulnerability Information
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Vulnerability Title
MLflow: Arbitrary file read on unauthenticated MLflow servers via prompt model version source
Source: CVE Program / CVE List V5
Vulnerability Description
MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. From 3.10.0 until 3.17.0, the prompt branch in _create_model_version() accepts schemeless relative sources because path validation runs only when a source has a URL scheme, and mlflow.prompt.is_prompt is interpreted by tag presence rather than a true value. A remote caller can store a server-local path as the model version artifact location and use /api/2.0/mlflow/model-versions/get-artifact to read files accessible to the MLflow server process. Default unauthenticated servers require no privileges, while basic-auth deployments are exposed to authenticated users who can create registered models. This issue is fixed in version 3.17.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
mlflow mlflow >= 3.10.0, < 3.17.0 -

II. Public POCs for CVE-2026-116690

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III. Intelligence Information for CVE-2026-116690

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Vendor Pages for CVE-2026-116690 (1)

Other References for CVE-2026-116690 (3)

Same Patch Batch · mlflow · 2026-10-27 · 3 CVEs total

CVE-2026-116692 9.8 CRITICAL MLflow: Remote code execution on unauthenticated MLflow servers via third-party scorer des
CVE-2026-116691 6.5 MEDIUM MLflow CrewAI autologging records LLM provider API keys in logged trace spans

IV. Related Vulnerabilities

Same product: mlflow
Same vendor: mlflow
Same weakness: CWE-22