What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-15 · updated 2026-10-26
• Weakness: CWE-200

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

Affected products

• Apache Airflow: before 3.2.0 — fixed in 3.2.0

How to fix

Upgrade to a fixed version: Apache Airflow 3.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/apache/airflow/pull/61580
• https://github.com/apache/airflow/pull/61582
• https://lists.apache.org/thread/t4dlmqkn0njz4chk3g7mdgzb96y4ttqh
• http://www.openwall.com/lists/oss-security/2026/04/15/3

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