CVE-2026-0545— Missing Authentication for Critical Function in mlflow/mlflow
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I. Basic Information for CVE-2026-0545
Vulnerability Information
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Vulnerability Title
Missing Authentication for Critical Function in mlflow/mlflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
In mlflow/mlflow, the FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization when the `basic-auth` app is enabled. This vulnerability affects the latest version of the repository. If job execution is enabled (`MLFLOW_SERVER_ENABLE_JOB_EXECUTION=true`) and any job function is allowlisted, any network client can submit, read, search, and cancel jobs without credentials, bypassing basic-auth entirely. This can lead to unauthenticated remote code execution if allowed jobs perform privileged actions such as shell execution or filesystem changes. Even if jobs are deemed safe, this still constitutes an authentication bypass, potentially resulting in job spam, denial of service (DoS), or data exposure in job results.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
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存在访问控制错误漏洞，该漏洞源于启用basic-auth应用时，/ajax-api/3.0/jobs/下的FastAPI作业端点未受身份验证或授权保护，可能导致未经身份验证的远程代码执行、身份验证绕过、作业垃圾邮件、拒绝服务或数据泄露。
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 ~ latest | - |
II. Public POCs for CVE-2026-0545
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | MLflow latest version contains an authentication bypass caused by unprotected FastAPI job endpoints under /ajax-api/3.0/jobs/* when basic-auth is enabled, letting unauthenticated network clients submit and manage jobs, exploit requires job execution enabled and allowlisted job functions. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-0545.yaml | POC Details |
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IV. Related Vulnerabilities
Same product: mlflow/mlflow
Same weakness: CWE-306
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