CVE-2026-33264

Description

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.

Traduire en français

Produits concernés

• Apache Software Foundation Apache Airflow
• Apache airflow

Scores CVSS

Faiblesses (CWE)

• CWE-502

Références

• https://github.com/apache/airflow/pull/66002 Issue TrackingPatch
• https://github.com/apache/airflow/pull/68528 Issue TrackingPatch
• https://lists.apache.org/thread/otvdw8qt2y7xy2n5nq9xby9ky4rf5ltj Vendor AdvisoryMailing List
• http://www.openwall.com/lists/oss-security/2026/07/07/1 Third Party AdvisoryMailing List

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories