Vulnerability in Apache Airflow
CVE-2026-68970
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Apache Airflow
- Apache Software Foundation Airflow — versions 0
Weakness classification (CWE)
References
- github.com/apache/airflow/pull/70891 (Patch, patch, Issue Tracking)
- www.cve.org/CVERecord (related, Mailing List, Third Party Advisory)
- lists.apache.org/thread/kkrlnbsk47oght4h38mcd3h2kcb8dt28 (vendor-advisory, Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-68970?
- CVE-2026-68970 is a medium-severity vulnerability in Apache Airflow, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.5/10. Published 2026-08-12.
- How severe is CVE-2026-68970?
- Medium severity. CVSS v3 base score is 6.5 out of 10.