Deserialization of untrusted data can occur in versions of the MLflow platform running version 1.23.0 or newer, enabling a maliciously uploaded LightGBM scikit-learn model to run arbitrary code on an end user’s system when interacted with.
"https://github.com/pypa/advisory-database/blob/main/vulns/mlflow/PYSEC-2026-1644.yaml"