CVE-2026-59244 — Apache Airflow: Secrets masker: `var.json` Variable values not masked in the Rendered Templates UI
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 — s…
Published: 2026-08-12 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7