Booking for Appointments and Events Calendar – Amelia <= 2.4.10 - Unauthenticated Payment Bypass via Package Reference (Incomplete Fix for CVE-2026-16582)
- ID
- WPSEC-2026-0309
- Plugin
- Booking for Appointments and Events Calendar – Amelia (ameliabooking)
- Affected
- all versions before 2.4.11
- Remediation
- Update to 2.4.11 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-807
- Usage
- Plugin Medium · Affected versions Low among sites WPSec scans, 2026-10-22
- Attack surface
- Booking for Appointments and Events Calendar – Amelia on WPSec AttackSurface
- Fix released
- Published
Description
The Booking for Appointments and Events Calendar – Amelia plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 2.4.10. This is due to the public booking endpoint treating a client-supplied packageCustomerService.packageCustomer.id value as proof that the appointment was paid for with a purchased package, and skipping payment processing without verifying that such a package exists or belongs to the booking customer. The fix for CVE-2026-16582 in version 2.4.6 covered only the packageCustomerService.id parameter. This makes it possible for unauthenticated attackers to create appointment bookings without completing the required online payment.
References
- https://wpsec.com/vuln/WPSEC-2026-0309/
- https://plugins.svn.wordpress.org/ameliabooking/tags/2.4.11/
- https://wordpress.org/plugins/ameliabooking/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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