CVE-2026-25219: Apache Airlfow: Sensitive Azure Service Bus connection string (and possibly other providers) exposed to users with view access

[Jarek Potiuk <potiuk () apache org>]

Severity: low 

Affected versions:

- Apache Airlfow (apache-airflow) before 3.2.0

Description:

The `access_key` and `connection_string` connection properties were not marked as sensitive names in secrets masker. 
This means that user with read permission could see the values in Connection UI, as well as when Connection was 
accidently logged to logs, those values could be seen in the logs. Azure Service Bus used those properties to store 
sensitive values. Possibly other providers could be also affected if they used the same fields to store sensitive data.

If you used Azure Service Bus connection with those values set or if you have other connections with those values 
storing senesitve values, you should upgrade Airflow to 3.2.0.

Credit:

Saurabh Banawar (finder)

References:

https://github.com/apache/airflow/pull/61580
https://github.com/apache/airflow/pull/61582
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-25219