Vulnerability · CVE-2026-42358
A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like , , , ) to be bypassed when the JSON value'…
Published Jun 1, 2026 · corrected/updated Jul 21, 2026 · apache airflow · evidence confidence medium
A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like , , , ) 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 ); 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 3.2.2 or later to cover the deep-nesting path.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-42358 is a medium public vulnerability record for apache airflow. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether apache airflow is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: apache/airflow. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 6.5. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-200. Sources contributing to this record: nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Jun 1, 2026 · NIST NVD
Detected
A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like , , , ) 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 plain
Jul 21, 2026 · NIST NVD
Updated
A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like , , , ) 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 plain
Affected
- cpe apache/airflowversion unspecified
Sources
- NIST NVDVulnerability recordCVE-2026-42358
A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like , , , ) to be bypassed when the JSON value's nesting depth exceeded the shared secrets masker's recursion limit: the maske
nvd.nist.gov