CVE-2026-42526 Apache Airflow Amazon provider: Prevent unauthorized access to team-scoped secrets in AWS Secrets Manager and SSM Parameter Store backends
A privileged caller without team context can retrieve another team's secrets by crafting a colliding connection ID in the experimental multi-tenant feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-42526?
CVE-2026-42526 is a medium-severity missing authorization vulnerability in Apache Airflow Amazon provider, published on 19 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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. `"my_team/conn"`) to the same path as another team's team-scoped secret when the caller had no team context. A privileged caller without team context could therefore retrieve another team's secret by crafting a colliding `conn_id`. Fixed in 9.28.0 by switching the team-scope separator to `--` and rejecting team-shaped `conn_id`s when team context is absent. Affects the experimental multi-tenant teams feature only. Users are recommended to upgrade to `apache-airflow-providers-amazon` 9.28.0, which fixes the issue.
Weakness: CWE-863
Which versions are affected by CVE-2026-42526?
3 open source packages ship an affected version, including apache-airflow-providers-amazon. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache-airflow-providers-amazon PyPI | All versions | 9.28.0 |
apache-airflow-providers-amazon PyPI | All versions | 9.28.0 |
apache-airflow-providers-amazon PyPI | All versions | 9.28.0 |
Products include Apache Apache-Airflow-Providers-Amazon.
How do I fix CVE-2026-42526?
Upgrade apache-airflow-providers-amazon to 9.28.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-42526 being exploited?
There is no known exploitation of CVE-2026-42526 in the wild and no public exploit code.
Other vulnerabilities in Apache Airflow Amazon provider
Sources
Also known as CLEANSTART-2026-GE58327, ECHO-3e07-2829-3520, GHSA-g9qc-qf28-hhqx, MINI-4rgh-qjq4-v8pr, MINI-jfvr-vcgq-7m6m, PYSEC-2026-595.