BIT-airflow-2026-33264

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/airflow/BIT-airflow-2026-33264.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-airflow-2026-33264
Aliases
Published
2026-07-09T08:41:48.718Z
Modified
2026-07-09T12:11:11.260524913Z
Summary
Apache Airflow: DAG author RCE on webserver via unrestricted import_string() in BaseSerialization.deserialize()
Details

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.

Database specific 
{
    "cpes": [
        "cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*"
    ],
    "severity": "Critical"
}
References

Affected packages

Bitnami / airflow

Package

Name
airflow
Purl
pkg:bitnami/airflow

Severity

  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.3.0

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/airflow/BIT-airflow-2026-33264.json"