Authentication Bypass by Primary Weakness Affecting mlflow package, versions [,3.10.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-MLFLOW-16698137
- published15 May 2026
- disclosed15 May 2026
- creditalrightryanx
Introduced: 15 May 2026
NewCVE-2026-2652 (opens in a new tab)How to fix?
Upgrade mlflow to version 3.10.0 or higher.
Overview
mlflow is a platform to streamline machine learning development, including tracking experiments, packaging code into reproducible runs, and sharing and deploying models.
Affected versions of this package are vulnerable to Authentication Bypass by Primary Weakness via the _find_fastapi_validator function. An attacker can gain unauthorized access to sensitive API endpoints by sending requests to non-/gateway/ paths when the server is started with authentication enabled and served via uvicorn. This allows actions such as submitting jobs, reading job results, canceling running jobs, and injecting arbitrary trace data without authentication.
Note:
This is only exploitable if the server is started with the --app-name basic-auth flag and served via uvicorn (ASGI).