CVE-2026-42526: Apache Airflow Amazon provider: Prevent unauthorized access to team-scoped secrets in AWS Secrets Manager and SSM Parameter Store backends

[Vincent Beck <vincbeck () apache org>]

Severity: low 

Affected versions:

- Apache Airflow Amazon provider (apache-airflow-providers-amazon) before 9.28.0

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.

Credit:

Justin Pakzad (remediation developer)

References:

https://github.com/apache/airflow/pull/65703
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-42526