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.
Metrics
Affected Vendors & Products
References
History
Wed, 03 Jun 2026 02:30:00 +0000
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:* |
Tue, 02 Jun 2026 18:30:00 +0000
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| Metrics |
ssvc
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Tue, 02 Jun 2026 17:30:00 +0000
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| Metrics |
cvssV3_1
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Mon, 01 Jun 2026 11:45:00 +0000
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| First Time appeared |
Apache
Apache airflow |
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| Vendors & Products |
Apache
Apache airflow |
Mon, 01 Jun 2026 11:30:00 +0000
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Mon, 01 Jun 2026 09:15:00 +0000
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| Description | 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. | |
| Title | Apache Airflow: Arbitrary import in custom deadline-reference deserialization | |
| Weaknesses | CWE-502 | |
| References |
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Status: PUBLISHED
Assigner: apache
Published: 2026-06-01T07:48:13.287Z
Updated: 2026-06-02T15:48:34.296Z
Reserved: 2026-05-11T22:40:03.868Z
Link: CVE-2026-45360
Updated: 2026-06-02T15:48:30.343Z
Status : Analyzed
Published: 2026-06-01T09:16:19.480
Modified: 2026-06-03T02:06:59.383
Link: CVE-2026-45360
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