{"id":"CVE-2025-8533","aliases":["EUVD-2025-23914","GHSA-8g5c-fvxq-mw4m"],"status":"published","title":"Incorrect Authorization of XPC Service in Fantastical.app","description":"A vulnerability was identified in the XPC services of Fantastical. The services failed to implement proper client authorization checks in its listener:shouldAcceptNewConnection method, unconditionally accepting requests from any local process. As a result, any local, unprivileged process could connect to the XPC service and access its methods.\n\n\n\n\nThis issue has been resolved in version 4.0.16.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00446,"percentile":0.39053,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2025-08-07T09:59:12Z","modified":"2026-06-17T10:07:10Z","products":[{"vendor":"flexibits","product":"fantastical"}],"references":[{"url":"https://cert.pl/en/posts/2025/08/CVE-2025-8533","tags":["third-party-advisory"]},{"url":"https://flexibits.com/fantastical","tags":["product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-8533"},{"url":"https://github.com/advisories/GHSA-8g5c-fvxq-mw4m"}],"sources":{"cve":[{"id":"CVE-2025-8533","title":"Incorrect Authorization of XPC Service in Fantastical.app","description":"A vulnerability was identified in the XPC services of Fantastical. The services failed to implement proper client authorization checks in its listener:shouldAcceptNewConnection method, unconditionally accepting requests from any local process. As a result, any local, unprivileged process could connect to the XPC service and access its methods.\n\n\n\n\nThis issue has been resolved in version 4.0.16.","status":"published","published":"2025-08-07T09:59:12.324Z","modified":"2025-08-07T13:27:42.989Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:32:38.025852Z"}],"euvd":[{"id":"EUVD-2025-23914","description":"A vulnerability was identified in the XPC services of Fantastical. The services failed to implement proper client authorization checks in its listener:shouldAcceptNewConnection method, unconditionally accepting requests from any local process. As a result, any local, unprivileged process could connect to the XPC service and access its methods.\n\n\n\n\nThis issue has been resolved in version 4.0.16.","status":"published","published":"2025-08-07T09:59:12Z","modified":"2025-08-07T13:27:42Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T20:32:00.279926Z"}],"ghsa":[{"id":"GHSA-8g5c-fvxq-mw4m","title":"A vulnerability was identified in the XPC services of Fantastical. The services failed to...","description":"A vulnerability was identified in the XPC services of Fantastical. The services failed to implement proper client authorization checks in its listener:shouldAcceptNewConnection method, unconditionally accepting requests from any local process. As a result, any local, unprivileged process could connect to the XPC service and access its methods.\n\n\n\n\nThis issue has been resolved in version 4.0.16.","status":"published","published":"2025-08-07T12:30:25Z","modified":"2025-08-07T12:30:36Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:03:12.284483Z"}],"nvd":[{"id":"CVE-2025-8533","description":"A vulnerability was identified in the XPC services of Fantastical. The services failed to implement proper client authorization checks in its listener:shouldAcceptNewConnection method, unconditionally accepting requests from any local process. As a result, any local, unprivileged process could connect to the XPC service and access its methods.\n\n\n\n\nThis issue has been resolved in version 4.0.16.","status":"published","published":"2025-08-07T10:15:38.41Z","modified":"2026-06-17T10:07:10.233Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:11:22.319351Z"}]}}