{"id":"CVE-2026-59244","aliases":["BIT-airflow-2026-59244","GHSA-f643-3rc2-j27w","PYSEC-2026-3706"],"url":"https://o3.security/vulnerability/CVE-2026-59244","summary":"Apache Airflow: Secrets masker: `var.json` Variable values not masked in the Rendered Templates UI","details":"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.","published":"2026-08-12T15:43:17.373Z","modified":"2026-10-21T02:58:48.606554292Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"apache-airflow","fixedVersion":"3.3.1"}],"fix":{"url":"https://github.com/apache/airflow/pull/68975","label":"apache/airflow#68975"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/08/12/7"},{"type":"WEB","url":"https://pypi.python.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59244.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/fncod6vttfo5fvmfs3h9r8s2kmm9j1n6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59244"},{"type":"FIX","url":"https://github.com/apache/airflow/pull/68975"},{"type":"WEB","url":"https://github.com/apache/airflow/commit/917a086be848943aaaaa577b927e381f2dc1e99f"},{"type":"WEB","url":"https://github.com/apache/airflow/commit/aee182636d0b10a95d94400f7d8b3228dc2c802f"},{"type":"WEB","url":"https://github.com/apache/airflow/commit/b23955afc5c74386a092a1be5bcd376751c3c8a9"},{"type":"PACKAGE","url":"https://github.com/apache/airflow"},{"type":"WEB","url":"https://github.com/apache/airflow/releases/tag/3.3.1"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-3706.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:58:48.606554292Z"}}