CVE-2021-45230 Apache Airflow: Creating DagRuns didn't respect Dag-level permissions in the Webserver

What is CVE-2021-45230?

CVE-2021-45230 is a medium-severity missing authorization vulnerability in Apache Airflow, published on 20 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In Apache Airflow prior to 2.2.0. This CVE applies to a specific case where a User who has "can_create" permissions on DAG Runs can create Dag Runs for dags that they don't have "edit" permissions for.

Which versions are affected by CVE-2021-45230?

4 open source packages ship an affected version, including apache-airflow and airflow. It affects 1 product.

Products include Apache Airflow.

How do I fix CVE-2021-45230?

Upgrade apache-airflow to a fixed version for your release line: 2.2.0 or 2.0.0b1.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-45230 being exploited?

There is no known exploitation of CVE-2021-45230 in the wild and no public exploit code.

Other vulnerabilities in Apache Airflow

• CVE-2020-13927 Apache Airflow's Experimental API Authentication Bypass Exploited Critical 9.8
• CVE-2020-11978 Apache Airflow Command Injection Exploited High 8.8
• CVE-2026-33264 Apache Airflow: DAG author RCE on webserver via unrestricted import_string() in BaseSerialization.deserialize() Critical 9.8
• CVE-2023-25754 Apache Airflow: Privilege escalation using airflow logs Critical 9.8
• CVE-2023-22884 Apache Airflow, Apache Airflow MySQL Provider: Arbitrary file read via MySQL provider in Apache Airflow Critical 9.8

All Apache Airflow vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-airflow-2021-45230, GHSA-4jh2-3c85-q67h, PYSEC-2022-11.