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.

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 <= 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.

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.

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

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

Easy!Appointments 1.3.0 has a Guessable CAPTCHA issue.