CVE-2025-8533

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. This issue has been resolved in version 4.0.16.

• CWE-863

• https://cert.pl/en/posts/2025/08/CVE-2025-8533
• https://flexibits.com/fantastical

Published

Aug 7, 2025

Last Modified

Jun 17, 2026

Status

Deferred

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