CVE-2026-42358 json
Apache Airflow: Variable masker depth-limit bypass returns cleartext nested secrets
published 2026-06-01 5 mo ago modified 2026-11-03 6 d ago also BIT-airflow-2026-42358 , EUVD-2026-33589 , GHSA-33g2-gx67-c2h3 , PYSEC-2026-2343
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like `password`, `token`, `secret`, `api_key`) to be bypassed when the JSON value's nesting depth exceeded the shared secrets masker's recursion limit: the masker returned the original nested item before checking the sensitive key name. An authenticated UI/API user with Variable read permission could harvest plaintext secret values stored under sensitive keys nested deep enough to exceed the masker's depth cap. Affects deployments that store sensitive values inside deeply-nested JSON Variables. This is a residual gap in the fix for CVE-2026-32690 (which covered shallower nesting via `max_depth=1`); the depth-limit boundary itself was not raised, so the same key-name bypass pattern reappears beyond the recursion cap. Users who already upgraded for CVE-2026-32690 should additionally upgrade to `apache-airflow` 3.2.2 or later to cover the deep-nesting path.
Patch / fix
- pypi apache-airflow 3.2.2
- bitnami airflow 3.2.2
- Apache Software Foundation Apache Airflow 3.0.0, 3.2.2
- github.com/apache/airflow#65912 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | apache-airflow | <3.2.2 |
3.2.2 |
| bitnami | airflow | <3.2.2 |
3.2.2 |
Affected products
- Apache Software Foundation Apache Airflow
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
github.com
/apache/airflow/pull/65912
patch, web, issue-tracking
-
lists.apache.org
/thread/33635mv3zjb75wn5453c5yf9trs8x2om
vendor-advisory, web, mailing-list, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-42358
advisory, web
-
github.com
/apache/airflow
package
-
pypi.org
/project/apache-airflow
package
-
github.com
/advisories/GHSA-33g2-gx67-c2h3
advisory
Sources
- CVE List CVE-2026-42358
- GitHub Advisory GHSA-33g2-gx67-c2h3
- NVD CVE-2026-42358
- OSV BIT-airflow-2026-42358
- OSV PYSEC-2026-2343
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