CVE-2026-59244
Apache Airflow: Secrets masker: `var.json` Variable values not masked in the Rendered Templates UI
- State
- Published
- Severity
- 6.5 Medium
- Published
- Aug 12, 2026
- Updated
- Sep 16, 2026
- Reserved
- Jul 4, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-312 Cleartext Storage of Sensitive Information
Affected Products
| Product | Versions |
|---|---|
Apache AirflowApache Software Foundation |
|
References
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