CVE-2026-33264
Apache Airflow allows code execution through unsafe serialized DAG deserialization
Severidad por fuente
La etiqueta propia de Trivy es CRITICAL. Crítica según GHSA, Bitnami.
Descripción
A bug in `BaseSerialization.deserialize()` allowed unrestricted `import_string()` of attacker-controlled class paths when the Scheduler / API Server loaded a serialized DAG: a DAG author could embed a malicious trigger into a DAG to gain remote code execution on the API Server / Scheduler process, crossing the Airflow security boundary that DAG-author code must never execute in those processes. Users are advised to upgrade to `apache-airflow` 3.3.0 or later. As a defense-in-depth mitigation, deployments where DAG-author trust is limited can restrict the `[core] allowed_deserialization_classes` config to a narrow allowlist.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | airflow | 3.3.0 |
| pip::GitHub Security Advisory pip | apache-airflow | 3.3.0 |
| echo pip::Echo OSV | apache-airflow | 3.3.0 |
| minimos | airflow-3 | 3.3.0-r0 |
Referencias
- http://www.openwall.com/lists/oss-security/2026/07/07/1
- https://advisory.echohq.com/cve/CVE-2026-33264
- https://github.com/apache/airflow
- https://github.com/apache/airflow/commit/69b6c54ef17b048ebb0e9a656d0d9e1c99480d6b
- https://github.com/apache/airflow/commit/7e9bdb245e09373d91fcb7bda575ad4be63aa28d
- https://github.com/apache/airflow/pull/66002
- https://github.com/apache/airflow/pull/68528
- https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-2082.yaml