Easy Appointments 4.0 - 4.0.2.1 - Unauthenticated Arbitrary Appointment Modification and Deletion via IDOR

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.

Easy Appointments < 4.0.2.2 - Unauthenticated Appointment Cancellation/Confirmation via Forgeable Email-Link Token

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.

WordPress Easy Appointments plugin <= 4.0.2.1 - Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Easy Appointments allows DOM-Based XSS. This issue affects Easy Appointments: from n/a through 4.0.2.1.

Easy Appointments < 4.0.1 - Contributor+ Sensitive Information Disclosure via REST Appointments Listing

The Easy Appointments WordPress plugin before 4.0.1 does not restrict one of its appointment-listing REST endpoints to the records belonging to the requesting user, allowing users with contributor-level access to read all bookings on the site, including customer names, schedules, and statuses.

Easy Appointments < 3.12.28 - Contributor+ Shortcode Allowlist Bypass

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.

Easy Appointments < 3.12.28 - Subscriber+ Cross-User Appointment Data Modification via IDOR

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.

Easy Appointments <= 4.0 - Contributor+ Appointment Data Disclosure & Modification via Missing Authorization

The Easy Appointments WordPress plugin through 4.0 does not perform capability checks in several of its appointment-management actions, relying only on a nonce that any authenticated user can obtain, allowing users with contributor-level access to read all customers' appointment details and to create, modify, and delete bookings.

Easy Appointments < 3.12.28 - Contributor+ Customer Data Disclosure

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.

Easy Appointments < 3.12.28 - Subscriber+ Customer PII Disclosure via IDOR

The Easy Appointments WordPress plugin before 3.12.28 does not verify ownership or capability when returning stored customer details, allowing users with subscriber-level access to read any customer's personal information by iterating an identifier.

Easy Appointments < 3.12.28 - Contributor+ Connection Deletion via Missing Authorization

The Easy Appointments WordPress plugin before 3.12.28 does not perform any capability or nonce check in one of its connection-deletion actions, allowing users with contributor-level access to delete the booking configuration and disable the booking system.

Easy Appointments < 3.12.28 - Subscriber+ Sensitive Information Disclosure via REST Appointments Listing

The Easy Appointments WordPress plugin before 3.12.28 does not require a sufficient capability on one of its appointment-listing REST endpoints, restricting it only to a capability that every authenticated user holds, allowing users with subscriber-level access to read all bookings on the site, including customer names, schedules, and statuses.

WordPress Easy Appointments plugin <= 3.12.27 - Insecure Direct Object References (IDOR) vulnerability

Unauthenticated Insecure Direct Object References (IDOR) in Easy Appointments <= 3.12.27 versions.

WordPress Easy Appointments plugin <= 3.12.21 - Broken Access Control vulnerability

Unauthenticated Broken Access Control in Easy Appointments <= 3.12.21 versions.

WordPress Easy Appointments plugin <= 3.12.14 - Content Injection vulnerability

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Easy Appointments Easy Appointments easy-appointments allows Code Injection.This issue affects Easy Appointments: from n/a through <= 3.12.14.

Easy Appointments <= 3.11.18 - Insufficient Authorization

The Easy Appointments plugin for WordPress is vulnerable to unauthorized modification of data due to insufficient user validation on the ajax_cancel_appointment() function in all versions up to, and including, 3.11.18. This makes it possible for unauthenticated attackers to cancel other users orders.

Easy Appointments <= 3.11.18 - Authenticated (Contributor+) Stored Cross-Site Scripting

The Easy Appointments plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'ea_full_calendar' shortcode in all versions up to, and including, 3.11.18 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Easy Appointments plugin before 1.12.0 for WordPress has XSS via a Settings values in the admin panel.

Easy Appointments < 3.11.2 - Contributor+ Stored XSS in Shortcode

The Easy Appointments WordPress plugin before 3.11.2 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

WordPress Easy Appointments Plugin <= 3.11.9 is vulnerable to Cross Site Request Forgery (CSRF)

Cross-Site Request Forgery (CSRF) vulnerability in Nikola Loncar Easy Appointments plugin <= 3.11.9 versions.

WordPress Easy Appointments plugin <= 3.10.7 - Auth. Stored Cross-Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nikola Loncar Easy Appointments allows Stored XSS.This issue affects Easy Appointments: from n/a through 3.10.7.