{"id":"CVE-2026-40961","aliases":["BIT-airflow-2026-40961","GHSA-6hcw-qqr8-pjj8","PYSEC-2026-2345"],"url":"https://o3.security/vulnerability/CVE-2026-40961","summary":"Apache Airflow: Open Redirect Bypass Vulnerability","details":"A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the `is_safe_url` check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to `apache-airflow` 3.2.2 or later. As a defense-in-depth mitigation, deployment operators can place Airflow behind a reverse proxy that strips off-domain `next=` query parameters before they reach the login endpoint.","published":"2026-06-01T07:55:04.647Z","modified":"2026-08-07T11:51:02.667890093Z","cvss":{"score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},"epss":{"score":0.00649,"percentile":0.47706,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"apache-airflow","fixedVersion":"3.2.2"}],"fix":{"url":"https://github.com/apache/airflow/pull/65557","label":"apache/airflow#65557"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/31/2"},{"type":"WEB","url":"https://pypi.python.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40961.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40961"},{"type":"FIX","url":"https://github.com/apache/airflow/pull/65557"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:02.667890093Z"}}