{"id":"GHSA-2r5m-76wx-56gx","summary":"Apache Airflow Vulnerable to Deserialization of Untrusted Data","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.","aliases":["BIT-airflow-2026-45360","CVE-2026-45360","PYSEC-2026-186"],"modified":"2026-09-10T03:51:07.640450880Z","published":"2026-06-01T09:31:14Z","database_specific":{"github_reviewed_at":"2026-07-09T21:00:55Z","nvd_published_at":"2026-06-01T09:16:19Z","cwe_ids":["CWE-502"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45360"},{"type":"WEB","url":"https://github.com/apache/airflow/pull/61461"},{"type":"WEB","url":"https://github.com/apache/airflow/pull/66737"},{"type":"PACKAGE","url":"https://github.com/apache/airflow"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-186.yaml"},{"type":"WEB","url":"https://lists.apache.org/thread/q227dghjwgfz8xsxrf2pwpz4wk43zm83"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/31/12"}],"affected":[{"package":{"name":"apache-airflow","ecosystem":"PyPI","purl":"pkg:pypi/apache-airflow"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"3.2.2"}]}],"versions":["3.2.0","3.2.1","3.2.1rc1","3.2.1rc2","3.2.1rc3","3.2.2rc1","3.2.2rc2","3.2.2rc3"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-2r5m-76wx-56gx/GHSA-2r5m-76wx-56gx.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}