AI agent vulnerability · MLflow

CVE-2026-0545: mlflow: FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization

criticalCVSS 3.0 9.1GHSA-7qhf-v65m-g5f3

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.

Published Apr 3, 2026 · Updated Apr 6, 2026

Affected packages

mlflow

Ecosystem: PyPI
Affected: <= 3.10.1
Fixed in: No patched version yet
Check: pip show mlflow

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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