The Beds24 Online Booking plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's beds24-link shortcode in all versions up to, and including, 2.0.26 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Mark Kinchin Beds24 Online Booking allows Stored XSS.This issue affects Beds24 Online Booking: from n/a through 2.0.24.