CVE-2026-42526: Apache Airflow Amazon Provider Vulnerability in Team-Scoped Secrets Access
Summary
CVE-2026-42526: In the AWS Secrets Manager and SSM Parameter Store secrets backends of apache-airflow-providers-amazon prior to 9.28.0, the team-scoping logic could resolve a conn_id containing a / (e.g. Affects apache-airflow-providers-amazon versions < 9.28.0. Fixed in 9.28.0. How to fix ↓
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Background
Apache Airflow is an open-source platform designed to programmatically author, schedule, and monitor workflows. The Amazon provider for Apache Airflow allows users to interact with AWS services seamlessly. However, prior to version 9.28.0, the package had a vulnerability that could allow unauthorized access to team-scoped secrets stored in AWS Secrets Manager and SSM Parameter Store, potentially compromising sensitive information.
Vulnerability Detail
The vulnerability arises from the team-scoping logic in the AWS Secrets Manager and SSM Parameter Store backends of the apache-airflow-providers-amazon package. Specifically, the logic could resolve a connection ID (conn_id) containing a '/' character (e.g., 'my_team/conn') to the same path as another team's secret when the caller lacked team context. This flaw allowed a privileged user without team context to craft a colliding conn_id, thereby retrieving another team's secret. This issue affects the experimental multi-tenant teams feature and poses a risk of sensitive data exposure.
How To Fix
Minimum fixed version
9.28.0
This is the first release that contains the fix.
pip install --upgrade "apache-airflow-providers-amazon==9.28.0"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There are no specific workarounds mentioned for this vulnerability. The recommended action is to upgrade to the patched version as soon as possible.
Conclusion
In summary, CVE-2026-42526 is a significant vulnerability in the Apache Airflow Amazon provider that could lead to unauthorized access to sensitive team-scoped secrets. Users are strongly advised to upgrade to version 9.28.0 or later to mitigate this risk effectively.
See every vulnerability recorded for apache-airflow-providers-amazon →
FAQ
CVE-2026-42526 is a vulnerability in the Apache Airflow Amazon provider that allows unauthorized access to team-scoped secrets in AWS Secrets Manager and SSM Parameter Store.
If your application uses the affected version of the apache-airflow-providers-amazon package, it may be at risk of exposing sensitive secrets to unauthorized users.
While there are no specific workarounds, it is crucial to prioritize upgrading to the patched version to ensure the security of your application.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The CVSS score for this vulnerability is 5.3, indicating a moderate level of severity.
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