CVE-2026-42360 (GCVE-0-2026-42360)
Vulnerability from cvelistv5 – Published: 2026-06-01 07:50 – Updated: 2026-11-03 06:56
VLAI
EPSS
VEX
Title
Apache Airflow: Rendered template truncation bypasses nested sensitive-key masking
Summary
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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 13:55 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
apache
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/apache/airflow/pull/65906 | patch |
| https://lists.apache.org/thread/obj79bpxnl7r5olz1… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Airflow |
Affected:
0 , < 3.0.0
(semver)
|
|
| Apache Software Foundation | Apache Airflow |
Affected:
3.0.0 , < 3.2.2
(semver)
|
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