GitHub Advisoryadvisory · PyPI

GHSA-7qhf-v65m-g5f3 mlflow: FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization

CRITICAL Published 2026-04-03 Modified 2026-04-06 Official page ↗
Aliases
CVE-2026-0545
Ecosystem
PyPI
Packages
mlflow
Severity
Critical
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-306
Reviewed
2026-04-06

Affected packages

• PyPI mlflow: <= 3.10.1 (no fix yet)

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.

Related

Alias · CVE (1)

  • CVE-2026-0545 In mlflow/mlflow, the FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization when the… vulnerability

Weakness · CWE (1)

  • CWE-306 Missing Authentication for Critical Functionality weakness

References