WP Booking Calendar is a widely-used WordPress plugin that enables users to manage and book appointments directly from their WordPress site. However, a critical Stored Cross-Site Scripting (XSS) vulnerability has been discovered in the plugin, identified as CVE-2024-10893. This vulnerability allows attackers to inject malicious JavaScript code into the plugin’s “Message title” field. The flaw can be exploited by users with any role, including editors, and can lead to the creation of a backdoor through which attackers can hijack accounts and take control of the site. With over 50,000 active installations, this vulnerability represents a significant security risk.
CVE-2024-10893 – WP Booking Calendar – Stored XSS to JS Backdoor Creation – POC
