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.
History

Wed, 12 Aug 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache airflow
Vendors & Products Apache
Apache airflow

Wed, 12 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
References

Wed, 12 Aug 2026 16:00:00 +0000

Type Values Removed Values Added
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.
Title Apache Airflow: Secrets masker: `var.json` Variable values not masked in the Rendered Templates UI
Weaknesses CWE-312
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-08-12T17:20:19.495Z

Reserved: 2026-07-04T00:20:30.244Z

Link: CVE-2026-59244

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-12T16:17:09.197

Modified: 2026-08-12T20:50:58.370

Link: CVE-2026-59244

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T23:45:03Z