CVE-2026-0545
CriticalCVSS 9.8Exploitation Probability (EPSS)
Very high risk90th percentile — higher than 90% of all known CVEs
Summary
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. Even with basic authentication enabled, any network client can submit, read, search, and cancel jobs without credentials, bypassing basic-auth entirely.
Risk Assessment
The risk includes unauthenticated remote code execution (RCE) if allowed jobs perform privileged actions such as shell execution or filesystem changes. Even with safe jobs, this constitutes an authentication bypass, potentially leading to job spam, denial of service (DoS), or data exposure in job results.
Recommendation
Immediately update mlflow to a version that fixes authentication for job endpoints, or temporarily disable job execution (`MLFLOW_SERVER_ENABLE_JOB_EXECUTION=false`) and remove all allowlisted job functions until a patch is released.
Original NVD description (English source)
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.