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.
References
| Link | Resource |
|---|---|
| https://github.com/apache/airflow/pull/66737 | Issue Tracking Patch |
| https://lists.apache.org/thread/q227dghjwgfz8xsxrf2pwpz4wk43zm83 | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/05/31/12 | Mailing List Third Party Advisory |
Configurations
History
03 Jun 2026, 02:06
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/apache/airflow/pull/66737 - Issue Tracking, Patch | |
| References | () https://lists.apache.org/thread/q227dghjwgfz8xsxrf2pwpz4wk43zm83 - Mailing List, Vendor Advisory | |
| References | () http://www.openwall.com/lists/oss-security/2026/05/31/12 - Mailing List, Third Party Advisory | |
| CPE | cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:* | |
| First Time |
Apache
Apache airflow |
02 Jun 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.3 |
01 Jun 2026, 11:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
01 Jun 2026, 09:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-01 09:16
Updated : 2026-06-03 02:06
NVD link : CVE-2026-45360
Mitre link : CVE-2026-45360
CVE.ORG link : CVE-2026-45360
JSON object : View
Products Affected
apache
- airflow
CWE
CWE-502
Deserialization of Untrusted Data
