Easy!Appointments through 1.6.0 Authorization Bypass via booking/register Endpoint

Easy!Appointments through 1.6.0 contains an authorization bypass vulnerability in Booking::register() that allows unauthenticated attackers to modify any appointment by supplying an appointment id without its hash. Attackers can enumerate sequential appointment ids with a self-asserted manage_mode flag to rewrite appointment details, rebind them to attacker-controlled customers, and obtain management hashes for rescheduling or cancellation.

Easy Appointments <= 3.12.27 - Missing Authorization to Authenticated (Contributor+) Sensitive Customer Information Exposure via ea_get_customers_ajax AJAX Action

The Easy Appointments plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.12.27 via the handle_customers_ajax. This makes it possible for authenticated attackers, with contributor-level access and above, to extract the full customer dataset from the ea_customers table, including personally identifiable information such as names, email addresses, mobile numbers, dates of birth, and physical addresses.

Easy Appointments <= 3.12.27 - Missing Authorization to Authenticated (Contributor+) Arbitrary Connection Deletion

The Easy Appointments plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check and missing nonce verification on the `ea_delete_multiple_connections` AJAX action in all versions up to, and including, 3.12.27. This makes it possible for authenticated attackers, with Contributor-level access and above, to delete arbitrary connection records from the `wp_ea_connections` table, disrupting the plugin's core booking functionality.

SQL Injection in EasyAppointments order_by Parameter Enables Remote Code Execution

SQL injection vulnerability exists in the order_by parameter of the /customers/search endpoint in Alex Tselegidis EasyAppointments <= 1.5.1. The vulnerability arises from unsanitized user input passed to the order_by method of the CodeIgniter Query Builder, enabling attackers to perform time-based queries and schema enumeration. Under certain MySQL configurations, the flaw may lead to remote code execution by writing a PHP shell using INTO OUTFILE.

Easy Appointments <= 3.12.27 - Missing Authorization to Authenticated (Author+) Bulk Appointment Manipulation

The Easy Appointments plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.12.27. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to cancel all upcoming appointments site-wide by marking every future appointment stored by the plugin as abandoned. The nonce required to authenticate the cancellation request is printed on the Appointments admin page, which is itself gated only by the edit_posts capability that Authors possess, making the nonce readily accessible to low-privileged users.

WordPress Easy!Appointments plugin <= 1.4.2 - Cross Site Request Forgery (CSRF) to Settings Change vulnerability

Cross-Site Request Forgery (CSRF) vulnerability in alextselegidis Easy!Appointments easyappointments allows Cross Site Request Forgery.This issue affects Easy!Appointments: from n/a through <= 1.4.2.

Easy Appointments <= 3.12.21 - Unauthenticated Sensitive Information Exposure via REST API

The Easy Appointments plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.12.21 via the `/wp-json/wp/v2/eablocks/ea_appointments/` REST API endpoint. This is due to the endpoint being registered with `'permission_callback' => '__return_true'`, which allows access without any authentication or authorization checks. This makes it possible for unauthenticated attackers to extract sensitive customer appointment data including full names, email addresses, phone numbers, IP addresses, appointment descriptions, and pricing information.

CSRF Protection Bypass: Sensitive endpoints accept GET requests, enabling admin account takeover

Easy!Appointments is a self hosted appointment scheduler. In 1.5.2 and earlier, application/core/EA_Security.php::csrf_verify() only enforces CSRF for POST requests and returns early for non-POST methods. Several application endpoints perform state-changing operations while accepting parameters from GET (or $_REQUEST), so an attacker can perform CSRF by forcing a victim's browser to issue a crafted GET request. Impact: creation of admin accounts, modification of admin email/password, and full admin account takeover.

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 <= 1.3.1 - Authenticated (Contributor+) Stored Cross-Site Scripting

The Easy!Appointments plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'easyappointments' shortcode in all versions up to, and including, 1.3.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Booking logic flaw in Easy!Appointments v1.5.1 allows unauthenticated attackers to create appointments with excessively long durations, causing a denial of service by blocking all future booking availability.

alextselegidis Easy!Appointments v1.5.1 was discovered to contain a SQL injection vulnerability via the order_by parameter.

Cross Site Scripting vulnerability in Alex Tselegidis EasyAppointments v.1.5.0 allows a remote attacker to execute arbitrary code via the legal_settings parameter.

WordPress Easy!Appointments plugin <= 1.3.3 - Arbitrary File Deletion vulnerability

Missing Authorization vulnerability in Alex Tselegidis Easy!Appointments.This issue affects Easy!Appointments: from n/a through 1.3.3.

An issue in Alex Tselegidis EasyAppointments v.1.5.0 allows a remote attacker to escalate privileges via the index.php file.

Use of Hard-coded Credentials in alextselegidis/easyappointments

Use of Hard-coded Credentials in GitHub repository alextselegidis/easyappointments prior to 1.5.0.

Code Injection in alextselegidis/easyappointments

Code Injection in GitHub repository alextselegidis/easyappointments prior to 1.5.0.

Session Fixation in alextselegidis/easyappointments

Session Fixation in GitHub repository alextselegidis/easyappointments prior to 1.5.0.

Improper Access Control in alextselegidis/easyappointments

Improper Access Control in GitHub repository alextselegidis/easyappointments prior to 1.5.0.

Cross-site Scripting (XSS) - Stored in alextselegidis/easyappointments

Cross-site Scripting (XSS) - Stored in GitHub repository alextselegidis/easyappointments prior to 1.5.0.