Advisory [CVE-2025-66388] Apache Airflow: Secrets in rendered templates not redacted properly and exposed in the UI
This Apache Software Foundation security advisory covers CVE-2025-66388 affecting Apache Airflow.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
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.
Is CVE-2025-66388 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2025-66388 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2025-66388?
Upgrade to a fixed release named by Apache:
- 3.1.4
Confirm against the vendor advisory before you patch.
- Apache Airflow 3.1.0 before 3.1.4
Official advisory · medium-confidence parse· fetched 7 days ago·verify at source
Mitigation checklist
- Users are recommended to upgrade to version 3.1.4, which fixes this issue.
Official advisory · medium-confidence parse· fetched 7 days ago·verify at source
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More Apache Software Foundation advisories
- CVE-2026-40913Nov 9, 2026Apache Airflow's public Import Errors API returns the raw parse-failure stack trace to any
- CVE-2026-50204Nov 9, 2026Apache Airflow's audit log stored Connection and Variable secret values in cleartext
- CVE-2026-68982Nov 9, 2026Apache Airflow's CeleryExecutor ran callback workloads
- CVE-2026-86829Nov 9, 2026Apache Airflow's scheduler fully deserializes XCom values written by task code
- CVE-2026-82337Nov 9, 2026Apache Airflow rebuilt deadline alert fields through generic deserialization
- CVE-2026-86468Nov 9, 2026Apache Airflow's CLI records its arguments in the audit log but masks secrets by argument
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