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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/apache/airflow/pull/68975 Issue Tracking, Patch
- https://lists.apache.org/thread/fncod6vttfo5fvmfs3h9r8s2kmm9j1n6 Mailing List, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · apacheNVD modified 2026-10-23 20:10
Affected (CPE criteria) 1
cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*
References 3
- https://github.com/apache/airflow/pull/68975 Issue Tracking, Patch
- https://lists.apache.org/thread/fncod6vttfo5fvmfs3h9r8s2kmm9j1n6 Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/08/12/7 Mailing List, Third Party Advisory