MEDIUM5.4

PYSEC-2026-1646

MLflow Cross-Site Request Forgery (CSRF) vulnerability

Quick fix

PYSEC-2026-1646 — mlflow: upgrade to the fixed version with the command below.

pip install --upgrade 'mlflow>=2.20.3'

Details

A Cross-Site Request Forgery (CSRF) vulnerability exists in the Signup feature of mlflow/mlflow versions 2.17.0 to 2.20.1. This vulnerability allows an attacker to create a new account, which may be used to perform unauthorized actions on behalf of the malicious user.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/mlflow

Introduced in: 2.17.0Fixed in: 2.20.3

Fixpip install --upgrade 'mlflow>=2.20.3'

References

https://nvd.nist.gov/vuln/detail/CVE-2025-1473[ADVISORY]
https://github.com/mlflow/mlflow/commit/ecfa61cb43d3303589f3b5834fd95991c9706628[WEB]
https://github.com/mlflow/mlflow[PACKAGE]
https://huntr.com/bounties/43dc50b6-7d1e-41b9-9f97-f28809df1d45[WEB]
https://pypi.org/project/mlflow[PACKAGE]
https://github.com/advisories/GHSA-969w-gqqr-g6j3[ADVISORY]