CVE-2024-7877: Nsqua Simply Schedule Appointments

Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin WordPress plugin before 1.6.7.55 does not sanitise and escape some of its Notification settings, which could allow high privilege users such as admin to perform Cross-Site Scripting attacks even when unfiltered_html is disallowed

Affected products

• Nsqua Simply Schedule Appointments: before 1.6.7.55 (fixed in 1.6.7.55)

Published 2024-11-05. Last modified 2026-06-17.