CVE-2026-59244

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.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-25)

CWE

CWE-312

Published

2026-08-12

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• apache:airflow

Packages (OSV)

References

• https://github.com/apache/airflow/pull/68975
• https://lists.apache.org/thread/fncod6vttfo5fvmfs3h9r8s2kmm9j1n6
• http://www.openwall.com/lists/oss-security/2026/08/12/7

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