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

Status: published. Published: 2026-04-15. Updated: 2026-11-03.

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

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: apache) — https://github.com/apache/airflow/pull/61580
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: apache) — https://github.com/apache/airflow/pull/61582

## Affected products and versions

- Apache Software Foundation / Apache Airflow (apache-airflow): ≥ 0; < 3.0.0 (affected, semver). Source: CNA: apache
- Apache Software Foundation / Apache Airflow (apache-airflow-core): ≥ 3.0.0; < 3.1.8 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N; source: ADP: CISA-ADP

- CISA KEV: No listing in collected sources

- EPSS: 0.55% as of 2026-11-02; percentile 46.13%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-200

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/apache/airflow/pull/61580 (CNA: apache; patch)

- https://github.com/apache/airflow/pull/61582 (CNA: apache; patch)

- https://lists.apache.org/thread/t4dlmqkn0njz4chk3g7mdgzb96y4ttqh (CNA: apache; vendor-advisory)

- http://www.openwall.com/lists/oss-security/2026/04/15/3 (ADP: CVE)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-25219; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-25219; retrieved 2026-11-03; source updated Not reported

Revision: d6c61839804951726f7fcf9f1916a7155edc220221508c2c2aafb4187f43fac9

Canonical: https://y2.dev/cve/CVE-2026-25219

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