---
id: CVE-2026-16582
title: >-
  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, 2.4.5
summary: >-
  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, 2.4.5. This is due to the plugin accepting a client-supplied
  package-…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
vendor: melograno
product: Booking for Appointments and Events Calendar – Amelia
affected:
  - booking_for_appointments_and_events_calendar_amelia <= 2.4.5
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T15:17:06.040'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16582'
references:
  - url: 'https://plugins.trac.wordpress.org/changeset/3640186'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/9e0c6f83-f4ca-4891-b2db-e2ac49d96ee5?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-18T14:39:58.944659Z'
epss: 0.0023
epssPercentile: 0.12302
ingestedAt: '2026-09-17T22:30:21.396Z'
---

## Overview

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, 2.4.5. This is due to the plugin accepting a client-supplied package-redemption identifier as proof of payment without validating it. This makes it possible for unauthenticated attackers to create approved appointment bookings without completing payment

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.