LatePoint Calendar Booking Plugin for WordPress Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the LatePoint Calendar Booking Plugin for Appointments and Events, affecting all versions up to and including 5.5.0. The issue arises from inadequate input sanitization and output escaping, allowing unauthenticated attackers to inject arbitrary web scripts into pages. These scripts are executed when a user accesses the compromised page.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Reproduction

To reproduce this vulnerability, an unauthenticated user can inject a script through the 'first_name' parameter. This can be done by submitting a form or using a method that allows for the inclusion of script tags in the 'first_name' field. Once the script is injected, it will be executed whenever a user accesses the page that displays the injected data.

Remediation

Users are advised to update the LatePoint Calendar Booking Plugin for Appointments and Events to version 5.5.1 or later, where this vulnerability has been addressed.