{"schema_version": "1.6.1", "id": "CVE-2026-45360", "summary": "Arbitrary import in custom deadline-reference deserialization", "details": "Apache Airflow's scheduler-side deadline-reference decoder (`SerializedCustomReference.deserialize_reference`) 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 — the default on single-host deployments where the DAG bundle is importable from the scheduler process — could embed a custom `DeadlineReference` whose serialized form named an attacker-controlled module path, causing the scheduler to `import_string(...)` and instantiate that class with a live SQLAlchemy session attached. Affects deployments where DAG-author code is less trusted than the scheduler process. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "0"}, {"fixed": "3.2.2"}]}]}], "references": [{"type": "WEB", "url": "https://github.com/apache/airflow/pull/66737"}, {"type": "WEB", "url": "https://lists.apache.org/thread/q227dghjwgfz8xsxrf2pwpz4wk43zm83"}]}