# CVE-2025-66388: Apache Airflow: Secrets in rendered templates not redacted properly and exposed in the UI

Status: published. Published: 2025-12-15. Updated: 2026-11-03.

A vulnerability in Apache Airflow allowed authenticated UI users to view secret values in rendered templates due to secrets not being properly redacted, potentially exposing secrets to users without the appropriate authorization.

Users are recommended to upgrade to version 3.1.4, which fixes this issue.

## 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/58772

## Affected products and versions

- Apache Software Foundation / Apache Airflow (apache-airflow-core): ≥ 3.1.0; < 3.1.4 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N; source: ADP: CISA-ADP

- CISA KEV: No listing in collected sources

- EPSS: 0.48% as of 2026-11-02; percentile 41.37%

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

- Weaknesses: CWE-201

## Exploit evidence

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

## References

- https://github.com/apache/airflow/pull/58772 (CNA: apache; patch)

- https://lists.apache.org/thread/mv9hzsx8grjf7gdlkxwppnpbtogtls2g (CNA: apache; vendor-advisory)

- http://www.openwall.com/lists/oss-security/2025/12/12/1 (ADP: CVE)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2025-66388; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2025-66388; retrieved 2026-11-03; source updated Not reported

Revision: 8ee255c67d6354ff2c393837bf0bba623e1eeeb0e74f43d52d02e1b14127bd72

Canonical: https://y2.dev/cve/CVE-2025-66388

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