CVE-2017-17780: Mediaburst Booking Calendar Sms

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

The Clockwork SMS clockwork-test-message.php component has XSS via a crafted "to" parameter in a clockwork-test-message request to wp-admin/admin.php. This component code is found in the following WordPress plugins: Clockwork Free and Paid SMS Notifications 2.0.3, Two-Factor Authentication - Clockwork SMS 1.0.2, Booking Calendar - Clockwork SMS 1.0.5, Contact Form 7 - Clockwork SMS 2.3.0, Fast Secure Contact Form - Clockwork SMS 2.1.2, Formidable - Clockwork SMS 1.0.2, Gravity Forms - Clockwork SMS 2.2, and WP e-Commerce - Clockwork SMS 2.0.5.

Affected products

• Mediaburst Booking Calendar Sms: version 1.0.5 only
• Mediaburst Clockwork Sms Notfications: version 2.0.3 only
• Mediaburst Contact Form 7 Sms: version 2.3.0 only
• Mediaburst Fast Secure Contact Form Sms: version 2.1.2 only
• Mediaburst Formidable: version 1.0.2 only
• Mediaburst Gravity Forms: version 2.2 only
• Mediaburst Two-Factor Authentication: version 1.0.2 only
• Mediaburst Wp E-Commerce: version 2.0.5 only

Published 2017-12-20. Last modified 2026-06-17.