Media

Online Scheduling and Appointment Booking System <= 28.4 - Insecure Direct Object Reference to Authenticated (Subscriber+) Privilege Escalation via 'id' and 'wp_user_id' Parameters via Query String / JSON Body

  • Publicada: 09.10.2026
  • Actualizado: 11.10.2026 10:22

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 28.4 via the 'id, wp_user_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the WordPress account binding of any Bookly staff record, including those owned by administrators, effectively hijacking a higher-privileged staff member's account association and escalating privileges. Exploitation requires the attacking user to be linked to at least one Bookly staff record, which occurs by default whenever an admin enables the bookly_gen_allow_staff_edit_profile option (active on fresh installs) and links a WordPress user to a staff entry.

Software afectado

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PlataformaPaqueteVersiones vulnerablesCorregida en
Plugin de WordPress Online Scheduling and Appointment Booking System – Bookly <= 28.4 28.5

Referencias

Puntuación CVSS 6.8/10
Vector CVSS
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Debilidad (CWE)
CWE-639
Plataforma
WordPress
Paquete
Online Scheduling and Appointment Booking System – Bookly
Publicada
09.10.2026
Actualizado
11.10.2026 10:22

Fuentes y licencias

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Historial de vulnerabilidades: Online Scheduling and Appointment Booking System – Bookly

Todas las vulnerabilidades publicadas de este paquete (Plugin de WordPress), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (32) en el archivo
Entradas en total
32
Primera → última
02.2018 10.2026
Sin corrección
0
Explotada en ataques
0

Distribución por gravedad

  • Crítica 1
  • Alta 12
  • Media 19

Divulgaciones por año

  1. 2018: 1
  2. 2019: 0
  3. 2020: 0
  4. 2021: 1
  5. 2022: 0
  6. 2023: 5
  7. 2024: 1
  8. 2025: 0
  9. 2026: 24
Gravedad:
  1. Online Scheduling and Appointment Booking System <= 28.4 - Insecure Direct Object Reference to Authenticated (Subscriber+) Privilege Escalation via 'id' and 'wp_user_id' Parameters via Query String / JSON Body esta entrada
    Media · 6.8 CVE-2026-104898 <= 28.4 28.5
  2. Alta · 8.1 CVE-2023-26526 <= 21.7.1 21.8

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