Vulnerability · Published Aug 12, 2026 · Assigned by apache
CVE-2026-68970Apache Airflow: Values of a list-shaped Variable are not masked in task logs and the Rendered Templates UI
Medium 6.5
In plain English
A medium-severity security flaw in Apache Airflow from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | apache-airflow | 3.3.1 | GHSA-f3c2-j7g8-vpp8 |
| PyPI | apache-airflow | 3.3.1 | PYSEC-2026-3712 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Airflow | 0 – before 3.0.0 |
| Apache Software Foundation | Apache Airflow | 3.0.0 – before 3.3.1 |
Weakness: CWE-312 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N