CVE-2020-24313

6.1 mediumEPSS 1.2%

Medium (6.1) in etoilewebdesign ultimate appointment booking \& scheduling. EPSS 1.2% chance of exploitation in the next 30 days.

Etoile Web Design Ultimate Appointment Booking & Scheduling WordPress Plugin v1.1.9 and lower does not sanitize the value of the "Appointment_ID" GET parameter before echoing it back out inside an input tag. This results in a reflected XSS vulnerability that attackers can exploit with a specially crafted URL.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2020-08-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

etoilewebdesign:ultimate_appointment_booking_\&_scheduling

References

https://wordpress.org/plugins/ultimate-appointment-scheduling/
https://zeroaptitude.com/zerodetail/wordpress-plugin-bug-hunting-part-1/
https://wordpress.org/plugins/ultimate-appointment-scheduling/
https://zeroaptitude.com/zerodetail/wordpress-plugin-bug-hunting-part-1/

Check your stack JSON