CVE-2026-42360

A bug in Apache Airflow's rendered-template field handling caused nested sensitive-key masking (e.g. nested `password` / `token` / `secret` / `api_key` keys inside a JSON template structure) to be bypassed when the rendered field exceeded `[core] max_templated_field_length`: Airflow stringified the structure before redaction, losing the nested key context, and persisted the plaintext value into `rendered_fields`. An authenticated UI/API user with permission to read rendered template fields could harvest secret values intended to be masked. Affects deployments where Dag authors pass structured JSON to operators with nested sensitive keys. This is a variant of `CWE-200` previously addressed for the user-registered `mask_secret()` patterns in CVE-2025-68438; that fix did not cover the nested sensitive-keyword allowlist. Users who already upgraded for CVE-2025-68438 should additionally upgrade to `apache-airflow` 3.2.2 or later to cover the nested-key path.
References
Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*

History

01 Jun 2026, 17:06

Type Values Removed Values Added
References () https://github.com/apache/airflow/pull/65906 - () https://github.com/apache/airflow/pull/65906 - Issue Tracking, Patch
References () https://lists.apache.org/thread/obj79bpxnl7r5olz1gsn0g94y88glnl4 - () https://lists.apache.org/thread/obj79bpxnl7r5olz1gsn0g94y88glnl4 - Mailing List, Vendor Advisory
First Time Apache
Apache airflow
CPE cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*

01 Jun 2026, 15:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 6.5

01 Jun 2026, 09:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-06-01 09:16

Updated : 2026-06-01 17:06


NVD link : CVE-2026-42360

Mitre link : CVE-2026-42360

CVE.ORG link : CVE-2026-42360


JSON object : View

Products Affected

apache

  • airflow
CWE
CWE-200

Exposure of Sensitive Information to an Unauthorized Actor