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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-f643-3rc2-j27w Apache Airflow exposes dict-valued var.json secrets in Rendered Templates
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 18 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 14 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}


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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-09-16T14:56:04.103Z

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

Link: CVE-2026-59244

cve-icon Vulnrichment

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

cve-icon NVD

Status : Modified

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

Modified: 2026-09-16T15:17:39.273

Link: CVE-2026-59244

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-14T19:45:16Z

Weaknesses