{"id":"CLEANSTART-2026-KO00783","summary":"FAB auth manager's Azure AD OAuth login defaulted `verify_signature=False` when decoding the ID token, so an attacker able to present a forged or unsigned (`alg:none`) ID token to the OAuth callbac...","details":"Security vulnerability affects the airflow-3 package. The FAB auth manager's Azure AD OAuth login defaulted `verify_signature=False` when decoding the ID token, so an attacker able to present a forged or unsigned (`alg:none`) ID token to the OAuth callback could bypass authentication and log in as an arbitrary user, including one holding the Admin r....","modified":"2026-10-31T06:15:07.626472908Z","published":"2026-10-30T11:06:44.944651Z","upstream":["CVE-2026-59243"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-KO00783.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-59243"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59243"}],"affected":[{"package":{"name":"airflow-3","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/airflow-3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.6-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-KO00783.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}