{"id":"GHSA-5w6h-pjw6-wvc6","summary":"apache-airflow-providers-keycloak: Missing OAuth 2.0 State and PKCE Enables Login CSRF and Session Fixation","details":"The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OAuth 2.0 `state` parameter on the login / login-callback flow, and did not use PKCE. An attacker with a Keycloak account in the same realm could deliver a crafted callback URL to a victim's browser and cause the victim to be logged into the attacker's Airflow session (login-CSRF / session fixation), where any credentials the victim subsequently stored in Airflow Connections would be harvestable by the attacker. Users are advised to upgrade `apache-airflow-providers-keycloak` to 0.7.0 or later.","aliases":["CVE-2026-40948","PYSEC-2026-2369"],"modified":"2026-07-13T16:42:48.722973213Z","published":"2026-04-18T15:34:15Z","database_specific":{"nvd_published_at":"2026-04-18T14:16:10Z","cwe_ids":["CWE-352"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-04-22T17:36:41Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40948"},{"type":"WEB","url":"https://github.com/apache/airflow/pull/64114"},{"type":"PACKAGE","url":"https://github.com/apache/airflow"},{"type":"WEB","url":"https://lists.apache.org/thread/kc0odpr70hbqhdb9ksnz42fkqz2xld9q"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/04/17/14"}],"affected":[{"package":{"name":"apache-airflow-providers-keycloak","ecosystem":"PyPI","purl":"pkg:pypi/apache-airflow-providers-keycloak"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.0.1"},{"fixed":"0.7.0"}]}],"versions":["0.0.1","0.1.0","0.1.0rc1","0.2.0","0.2.0rc1","0.3.0","0.3.0rc1","0.4.0","0.4.0rc1","0.4.1","0.4.1rc1","0.5.0","0.5.0rc1","0.5.1","0.5.1rc1","0.5.2","0.5.2rc1","0.5.3","0.5.3rc1","0.6.0","0.6.0rc1","0.7.0rc1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5w6h-pjw6-wvc6/GHSA-5w6h-pjw6-wvc6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"}]}