---
id: CVE-2026-77689
title: >-
  The Booking for Appointments and Events Calendar  WordPress plugin before
  9.8.1 does not verify that a payment was actually taken before recording a
  booking as paid, trusting the payment gateway named in a public,
  unauthenticated booking…
summary: >-
  The Booking for Appointments and Events Calendar  WordPress plugin before
  9.8.1 does not verify that a payment was actually taken before recording a
  booking as paid, trusting the payment gateway named in a public,
  unauthenticated booking…
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-284
product: Booking for Appointments and Events Calendar
affected:
  - booking_for_appointments_and_events_calendar >= 9.0 < 9.8.1
published: '2026-09-12'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T21:10:17.423'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77689'
references:
  - url: 'https://wpscan.com/vulnerability/ac597716-193d-419f-b55c-802ee979385e/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00221
epssPercentile: 0.12909
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-12T15:26:29.405867Z'
ingestedAt: '2026-09-14T15:23:07.478Z'
---

## Overview

The Booking for Appointments and Events Calendar  WordPress plugin before 9.8.1 does not verify that a payment was actually taken before recording a booking as paid, trusting the payment gateway named in a public, unauthenticated booking request even when the site has never configured that gateway. This lets an unauthenticated attacker obtain confirmed, fully paid appointments and events without any payment being collected.

## Remediation

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