BIT-AIRFLOW-2026-45360 Apache Airflow: Arbitrary import in custom deadline-reference deserialization

Apache Airflow's scheduler-side deadline-reference decoder SerializedCustomReference.deserializereference imported and dispatched arbitrary class paths drawn from DAG-author-controlled serialized state without an allowlist or plugin-registry gate. A DAG author whose code reaches the scheduler — t...

CVE-2026-45360

The Apache Airflow scheduler-side deadline-reference decoder, specifically the SerializedCustomReference.deserialize_reference function, is vulnerable to arbitrary class instantiation. The root cause is the lack of an allowlist or plugin-registry gate when importing and dispatching class paths dr...

PT-2026-45374

Name of the Vulnerable Software and Affected Versions Apache Airflow versions prior to 3.2.2 Description The scheduler-side deadline-reference decoder SerializedCustomReference.deserialize reference imports and dispatches arbitrary class paths from serialized state controlled by a DAG author...