CVE-2026-25219 Apache Airlfow: Sensitive Azure Service Bus connection string (and possibly other providers) exposed to users with view access
Users with view access can expose sensitive Azure Service Bus connection strings in the UI and logs due to missing secret masking.
- 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-2026-25219?
CVE-2026-25219 is a medium-severity vulnerability in Apache Airflow, published on 15 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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 accidentaly 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 sensitve values, you should upgrade Airflow to 3.1.8
Weakness: CWE-200
Which versions are affected by CVE-2026-25219?
4 open source packages ship an affected version, including apache-airflow and airflow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache-airflow PyPI | All versions | 3.1.8 |
apache-airflow PyPI | All versions | 3.1.8 |
apache-airflow PyPI | All versions | 3.1.8 |
airflow Bitnami | All versions | 3.1.8 |
Products include Apache Airflow.
How do I fix CVE-2026-25219?
Upgrade apache-airflow to 3.1.8 or later.
Is CVE-2026-25219 being exploited?
There is no known exploitation of CVE-2026-25219 in the wild and no public exploit code.
Other vulnerabilities in Apache Airflow
- CVE-2020-13927 Apache Airflow's Experimental API Authentication Bypass
- CVE-2020-11978 Apache Airflow Command Injection
- CVE-2026-33264 Apache Airflow: DAG author RCE on webserver via unrestricted import_string() in BaseSerialization.deserialize()
- CVE-2023-25754 Apache Airflow: Privilege escalation using airflow logs
- CVE-2023-22884 Apache Airflow, Apache Airflow MySQL Provider: Arbitrary file read via MySQL provider in Apache Airflow
Sources
Also known as BIT-airflow-2026-25219, ECHO-0aa9-b91a-8ef7, GHSA-4g48-54q2-fg7q, MINI-5fcj-c3cc-hr35, MINI-hp59-jh52-q444, PYSEC-2026-2344.