CVE-2024-0855

The Spiffy Calendar WordPress plugin before 4.9.9 doesn't check the event_author parameter, and allows any user to alter it when creating an event, leading to deceiving users/admins that a page was created by a Contributor+.

CVE-2017-9420

Cross site scripting (XSS) vulnerability in the Spiffy Calendar plugin before 3.3.0 for WordPress allows remote attackers to inject arbitrary JavaScript via the yr parameter.