Easy Appointments

The Easy Appointments WordPress plugin before 4.0.2.2 does not use an unguessable token to authorize its mail-link appointment cancellation and confirmation action, deriving the token from a hardcoded source-embedded salt and the appointment's creation timestamp, so unauthenticated attackers who know or guess that timestamp can cancel or confirm arbitrary appointments.

Published: 2026-09-18T06:00:15.366Z
Updated: 2026-09-18T11:09:42.028Z

The Easy Appointments WordPress plugin before 4.0.2.2 does not perform an ownership or authorization check on its unauthenticated appointment-reservation endpoint before updating an existing appointment identified by a request-supplied id, allowing unauthenticated attackers to overwrite, and through a follow-on cleanup delete, arbitrary appointments.

Published: 2026-09-18T06:00:15.556Z
Updated: 2026-09-18T11:09:27.511Z

The Easy Appointments WordPress plugin before 3.12.28 does not verify that the appointment targeted by its customer-data update action belongs to the current user; the action only checks a shared nonce that any authenticated user can obtain from their own appointment's edit form. A subscriber-level user with an appointment of their own can therefore reuse that nonce to overwrite the customer metadata (email, name, phone, description) of another user's appointment. Because the Easy Appointments WordPress plugin before 3.12.28 then treats that metadata as the appointment's contact data, a subsequent administrator status change with customer notifications enabled delivers the victim's appointment notification to the attacker-controlled email address.

Published: 2026-07-29T06:00:03.059Z
Updated: 2026-08-10T12:43:21.732Z

The Easy Appointments WordPress plugin before 3.12.28 does not perform a per-request capability or nonce check on one of its customer-listing handlers, allowing authenticated users with contributor-level access to read every stored customer's personal information.

Published: 2026-07-30T06:00:05.206Z
Updated: 2026-08-10T12:42:33.639Z

The Easy Appointments WordPress plugin before 3.12.28 does not correctly validate shortcode input in one of its block-rendering actions, checking only the first tag of the supplied string against an allowlist while rendering the entire string, allowing users with contributor-level access to execute arbitrary registered shortcodes.

Published: 2026-08-06T17:00:54.812Z
Updated: 2026-08-10T12:33:13.226Z