# CVE-2026-68970: Apache Airflow: Values of a list-shaped Variable are not masked in task logs and the Rendered Templates UI

Status: published. Published: 2026-08-12. Updated: 2026-11-03.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: apache) — https://github.com/apache/airflow/pull/70891

## Affected products and versions

- Apache Software Foundation / Apache Airflow (apache-airflow): ≥ 0; < 3.0.0 (affected, semver). Source: CNA: apache
- Apache Software Foundation / Apache Airflow (apache-airflow-core): ≥ 3.0.0; < 3.3.1 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N; source: ADP: CISA-ADP

- CISA KEV: No listing in collected sources

- EPSS: 0.23% as of 2026-11-02; percentile 13.86%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-312

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/apache/airflow/pull/70891 (CNA: apache; patch)

- https://lists.apache.org/thread/kkrlnbsk47oght4h38mcd3h2kcb8dt28 (CNA: apache; vendor-advisory)

- https://www.cve.org/CVERecord?id=CVE-2026-59244 (CNA: apache; related)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-68970; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-68970; retrieved 2026-11-03; source updated Not reported

Revision: 302979dec81eea40988a717a2178fafa5043e59643c9dce96982aa16d562cc18

Canonical: https://y2.dev/cve/CVE-2026-68970

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