Severity: moderate Affected versions:
- Apache Airflow (apache-airflow) before 3.3.1 Description: Apache Airflow's secrets masker did not mask `var.json` Variable values whose value is a dict in the Rendered Templates UI — the dict value failed an `isinstance(str)` guard — so a secret stored as a JSON Variable and referenced in a template via `var.json` was displayed in cleartext to any user with access to that task's Rendered Templates view. Users are advised to upgrade to apache-airflow 3.3.1 or later, which masks nested Variable values regardless of type. Credit: Juan Pablo Guereca (@jpgerek) (finder) Juan Pablo Guereca (@jpgerek) (remediation developer) References: https://github.com/apache/airflow/pull/68975 https://airflow.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-59244
