Apache Airflow up to 3.1.7 Azure Service Bus access_key/connection_string information disclosure

Summaryinfo

A vulnerability was found in Apache Airflow up to 3.1.7. It has been classified as problematic. Affected is an unknown function of the component Azure Service Bus. The manipulation of the argument access_key/connection_string leads to information disclosure. This vulnerability is traded as CVE-2026-25219. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apache Airflow up to 3.1.7 and classified as problematic. This issue affects an unknown code block of the component Azure Service Bus. The manipulation of the argument access_key/connection_string with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

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 3.2.0.

The weakness was shared by Saurabh Banawar. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-25219 since 01/30/2026. The exploitation is known to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/16/2026). The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 3.1.8 or 3.2.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1153). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Apache Airflow

Productinfo

Type

• Business Process Management Software

Vendor

• Apache

Name

• Airflow

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7

License

• open-source

Website

• Vendor: https://www.apache.org/
• Product: https://github.com/apache/airflow/

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Be aware that VulDB is the high quality source for vulnerability data.

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