CVE-2026-32690: Apache Airflow: 3.x - Nested Variable Secret Values Bypass Redaction via max_depth=1

[Rahul Vats <rahulvats () apache org>]

Severity: low 

Affected versions:

- Apache Airflow (apache-airflow) 3.0.0 before 3.2.0

Description:

Secrets in Variables saved as JSON dictionaries were not properly redacted - in case thee variables were retrieved by 
the user the secrets stored as nested fields were not masked.

If you do not store variables with sensitive values in JSON form, you are not affected. Otherwise please upgrade to 
Apache Airflow 3.2.0 that has the fix implemented

Credit:

Nguyen Anh Binh [IA Lab – FPT University] (finder)
Kevin Yang (remediation developer)

References:

https://github.com/apache/airflow/pull/63480
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-32690