Easy!Appointments 1.3.0 has a Guessable CAPTCHA issue.

Easy!Appointments 1.3.0 has a Missing Authorization issue allowing retrieval of hashed passwords and salts.

Easy!Appointments 1.3.2 plugin for WordPress allows Sensitive Information Disclosure (Username and Password Hash).

Exposure of Private Personal Information to an Unauthorized Actor in GitHub repository alextselegidis/easyappointments prior to 1.4.3.

API Privilege Escalation in GitHub repository alextselegidis/easyappointments prior to 1.5.0. Full system takeover.

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

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

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

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

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

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

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

A BOLA vulnerability in POST /secretaries allows a low privileged user to create a low privileged user (secretary) in the system. This results in unauthorized data manipulation.

A BOLA vulnerability in POST /admins allows a low privileged user to create a high privileged user (admin) in the system. This results in privilege escalation.

A BOLA vulnerability in POST /providers allows a low privileged user to create a privileged user (provider) in the system. This results in privilege escalation.

A BOLA vulnerability in POST /services allows a low privileged user to create a service for any user in the system (including admin). This results in unauthorized data manipulation.

A BOLA vulnerability in POST /customers allows a low privileged user to create a low privileged user (customer) in the system. This results in unauthorized data manipulation.

Authorization Bypass Through User-Controlled Key in GitHub repository alextselegidis/easyappointments prior to 1.5.0.

A BOLA vulnerability in GET, PUT, DELETE /categories/{categoryId} allows a low privileged user to fetch, modify or delete the category of any user (including admin). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /providers/{providerId} allows a low privileged user to fetch, modify or delete a privileged user (provider). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /appointments/{appointmentId} allows a low privileged user to fetch, modify or delete an appointment of any user (including admin). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /webhooks/{webhookId} allows a low privileged user to fetch, modify or delete a webhook of any user (including admin). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /secretaries/{secretaryId} allows a low privileged user to fetch, modify or delete a low privileged user (secretary). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /admins/{adminId} allows a low privileged user to fetch, modify or delete a high privileged user (admin). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /settings/{settingName} allows a low privileged user to fetch, modify or delete the settings of any user (including admin). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /customers/{customerId} allows a low privileged user to fetch, modify or delete a low privileged user (customer). This results in unauthorized access and unauthorized data manipulation.

A BOLA vulnerability in GET, PUT, DELETE /services/{serviceId} allows a low privileged user to fetch, modify or delete the services of any user (including admin). This results in unauthorized access and unauthorized data manipulation.

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.

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.

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.

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.

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

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.