CVE-2020-24313
This results in a reflected XSS vulnerability that attackers can exploit with a specially crafted URL.
Does this matter?
Lower severity and a low EPSS score (1.15%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.15% probability · 67th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- etoilewebdesign/ultimate appointment booking \& scheduling
- Source
- cve@mitre.org
EPSS 1.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://wordpress.org/plugins/ultimate-appointment-scheduling/Product, Third Party Advisory
- https://zeroaptitude.com/zerodetail/wordpress-plugin-bug-hunting-part-1/Exploit, Third Party Advisory, URL Repurposed
- https://wordpress.org/plugins/ultimate-appointment-scheduling/Product, Third Party Advisory
- https://zeroaptitude.com/zerodetail/wordpress-plugin-bug-hunting-part-1/Exploit, Third Party Advisory, URL Repurposed
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.