CVE-2026-68970: Apache Airflow

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Apache Airflow's Task SDK did not mask the contents of a Variable whose JSON value is a list, so secrets stored in that shape appeared in cleartext in task logs and in the Rendered Templates UI. Masking was applied only when the deserialized value was a string or a dict; a list at the top level matched neither and was returned unmasked. Any authenticated user able to read the logs or rendered templates of a task that references such a Variable could recover the values, with no special configuration required. This is the list-shaped counterpart of CVE-2026-59244, whose fix covered the dict case only, so deployments that upgraded in response to that advisory remain affected and must upgrade again. Users are advised to upgrade to apache-airflow 3.3.1 or later.

Affected products

• Apache Airflow: before 3.3.1 (fixed in 3.3.1)

Published 2026-08-12. Last modified 2026-09-16.