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¿Es seguro Simply Schedule Appointments?

Vulnerabilidades conocidas, compatibilidad con PHP y alternativas más seguras para el plugin de WordPress Simply Schedule Appointments — verificado contra la base de datos de seguridad local de WP Clinic.

Qué hace este plugin

  • Slug: simply-schedule-appointments
  • 60000+ instalaciones activas

appointment bookingappointmentsbookingbooking systemscheduling

Estado de mantenimiento

  • Última versión conocida: 1.6.12.10
  • Requiere PHP: 7.4+
  • PHP máximo soportado (analizado): 8.4

Vulnerabilidades conocidas

34 CVEs conocidos registrados para Simply Schedule Appointments.

CVE Vulnerabilidad Tipo Gravedad Afectadas Corregido en Publicado Estado
CVE-2026-57812 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.12.6 Media 6,5 < 1.6.12.6 1.6.12.6 2026-07-09 ✓ corregido en la última versión
CVE-2026-59523 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.12.0 Media 6,5 < 1.6.12.0 1.6.12.0 2026-07-09 ✓ corregido en la última versión
CVE-2026-57317 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.12.4 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Alta 7,1 < 1.6.12.4 1.6.12.4 2026-06-26 ✓ corregido en la última versión
CVE-2026-39447 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.11.0 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Alta 7,1 < 1.6.11.0 1.6.11.0 2026-05-28 ✓ corregido en la última versión
CVE-2026-7797 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.11.9 Neutralización incorrecta de elementos especiales en un comando SQL (inyección SQL) Alta 7,5 < 1.6.11.9 1.6.11.9 2026-05-27 ✓ corregido en la última versión
CVE-2026-6937 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.11.9 Falta de control de autorización Media 5,3 < 1.6.11.9 1.6.11.9 2026-05-27 ✓ corregido en la última versión
CVE-2026-7493 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.11.7 Consumo de recursos no controlado Media 5,3 < 1.6.11.7 1.6.11.7 2026-05-26 ✓ corregido en la última versión
CVE-2026-4807 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.11 Falta de control de autorización Media 6,5 < 1.6.11 1.6.11 2026-05-06 ✓ corregido en la última versión

CVE-2026-57812

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 1.6.12.4. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-59523

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 1.6.11.11. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-57317

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.6.12.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-39447

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.6.10.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-7797

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'append_where_sql' parameter in all versions up to, and including, 1.6.11.8 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The /appointments/bulk REST endpoint is reachable by unauthenticated attackers because its permission check accepts a public nonce that is embedded in the booking widget's frontend JavaScript (ssa.api.public_nonce) and visible to all site visitors; exploitation requires issuing the request as a PUT with an application/x-www-form-urlencoded body so that PHP's superglobals are not populated and the blocklist check silently passes.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2026-6937

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.6.11.8 due to the plugin not properly verifying that a user is authorized to perform an action via the bulk appointments REST API endpoint. This makes it possible for unauthenticated attackers to modify arbitrary appointment records including customer PII, payment status, and meeting URL fields, and to expose full customer PII from existing appointment records via the bulk endpoint response. The public nonce is a static, user-independent value present in the HTML source of any page hosting the [ssa_booking] shortcode, meaning any visitor who has viewed such a page can obtain it and target any appointment in the system without authentication.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2026-7493

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to denial of service in all versions up to, and including, 1.6.11.5. This is due to a publicly accessible REST API endpoint (/wp-json/ssa/v1/async) that calls PHP's sleep() function on a user-supplied delay parameter without any rate limiting. This makes it possible for unauthenticated attackers to exhaust PHP worker processes, denying access to the site to legitimate users.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2026-4807

The Appointment Booking Calendar plugin for WordPress is vulnerable to Missing Authorization in versions up to and including 1.6.10.6. This is due to a flawed authorization logic in the nonce_permissions_check() method combined with the public exposure of a site-wide reusable nonce. The plugin exposes a public_nonce value through the /wp-json/ssa/v1/embed-inner endpoint, which is accessible to unauthenticated users. The appointment deletion endpoint at /wp-json/ssa/v1/appointments/{id}/delete and /wp-json/ssa/v1/appointments/bulk use a permission check that accepts requests containing both an X-WP-Nonce header (with any arbitrary value) and an X-PUBLIC-Nonce header (with the valid public nonce). When the X-WP-Nonce validation fails, the function falls back to validating the X-PUBLIC-Nonce without properly rejecting the request. Since the public_nonce is exposed to all unauthenticated visitors and is site-wide (not user-specific or appointment-specific), attackers can obtain it and use it to view details of arbitrary appointments, including the public_edit_url, or delete arbitrary appointments by ID. This makes it possible for unauthenticated attackers to view, delete or modify any appointment in the system, disclosing sensitive appointment data, causing service disruption, and loss of booking records.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

+ 26 vulnerabilidades conocidas más
CVE Vulnerabilidad Tipo Gravedad Afectadas Corregido en Publicado Estado
CVE-2026-42384 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.11.2 Inserción de información sensible en los datos enviados Alta 7,5 < 1.6.11.2 1.6.11.2 2026-04-27 ✓ corregido en la última versión
CVE-2026-39493 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.9.29 Neutralización incorrecta de elementos especiales en un comando SQL (inyección SQL) Crítica 9,3 < 1.6.9.29 1.6.9.29 2026-04-08 ✓ corregido en la última versión
CVE-2026-39495 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.9.29 Alta 8,5 < 1.6.9.29 1.6.9.29 2026-03-26 ✓ corregido en la última versión
CVE-2026-39694 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.11.1 Media 5,3 < 1.6.11.1 1.6.11.1 2026-02-26 ✓ corregido en la última versión
CVE-2025-69315 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.9.17 Falta de control de autorización Media 6,5 < 1.6.9.17 1.6.9.17 2026-01-20 ✓ corregido en la última versión
CVE-2025-12166 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.9.13 Neutralización incorrecta de elementos especiales en un comando SQL (inyección SQL) Alta 7,5 < 1.6.9.13 1.6.9.13 2026-01-14 ✓ corregido en la última versión
CVE-2025-11723 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.9.6 Uso de valores insuficientemente aleatorios Media 6,5 < 1.6.9.6 1.6.9.6 2026-01-05 ✓ corregido en la última versión
CVE-2025-13754 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.9.17 Falta de control de autorización Media 5,3 < 1.6.9.17 1.6.9.17 2025-12-18 ✓ corregido en la última versión
CVE-2024-13431 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.8.5 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Media 6,1 < 1.6.8.5 1.6.8.5 2025-03-06 ✓ corregido en la última versión
CVE-2024-7877 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.7.55 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Media 4,8 < 1.6.7.55 1.6.7.55 2024-10-15 ✓ corregido en la última versión
CVE-2024-7876 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.7.55 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Media 4,8 < 1.6.7.55 1.6.7.55 2024-10-15 ✓ corregido en la última versión
CVE-2024-7129 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.7.43 Neutralización incorrecta de elementos especiales en un comando del sistema operativo (inyección de comandos del SO) Alta 7,2 < 1.6.7.43 1.6.7.43 2024-08-23 ✓ corregido en la última versión
CVE-2024-4288 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.7.18 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Media 5,4 < 1.6.7.18 1.6.7.18 2024-05-15 ✓ corregido en la última versión
CVE-2024-22311 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.6.24 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Alta 7,1 < 1.6.6.24 1.6.6.24 2024-03-26 ✓ corregido en la última versión
CVE-2024-2342 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.7.9 Neutralización incorrecta de elementos especiales en un comando SQL (inyección SQL) Alta 8,8 < 1.6.7.9 1.6.7.9 2024-03-20 ✓ corregido en la última versión
CVE-2024-2341 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.7.9 Neutralización incorrecta de elementos especiales en un comando SQL (inyección SQL) Media 6,5 < 1.6.7.9 1.6.7.9 2024-03-20 ✓ corregido en la última versión
CVE-2024-1760 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.6.24 Falsificación de petición en sitios cruzados (CSRF) Media 4,7 < 1.6.6.24 1.6.6.24 2024-03-05 ✓ corregido en la última versión
CVE-2023-50851 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.6.1 Neutralización incorrecta de elementos especiales en un comando SQL (inyección SQL) Alta 7,6 < 1.6.6.1 1.6.6.1 2023-12-21 ✓ corregido en la última versión
CVE-2022-2374 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.5.7.7 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Media 4,8 < 1.5.7.7 1.5.7.7 2022-08-08 ✓ corregido en la última versión
CVE-2022-2373 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.5.7.7 Falta de control de autorización Media 5,3 < 1.5.7.7 1.5.7.7 2022-08-08 ✓ corregido en la última versión
CVE-2025-1119 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.8.7 Control incorrecto de la generación de código (inyección de código) Alta 7,3 < 1.6.8.7 1.6.8.7 0000-00-00 ✓ corregido en la última versión
CVE-2025-4667 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.8.32 Neutralización incorrecta de la entrada al generar la página web (Cross-site Scripting / XSS) Media 6,4 < 1.6.8.32 1.6.8.32 0000-00-00 ✓ corregido en la última versión
CVE-2026-3658 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.10.2 Desconocido < 1.6.10.2 1.6.10.2 0000-00-00 ✓ corregido en la última versión
CVE-2026-3045 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.10.0 Desconocido < 1.6.10.0 1.6.10.0 0000-00-00 ✓ corregido en la última versión
CVE-2026-1704 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.10.0 Desconocido < 1.6.10.0 1.6.10.0 0000-00-00 ✓ corregido en la última versión
CVE-2026-1708 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin [simply-schedule-appointments] < 1.6.9.29 Desconocido < 1.6.9.29 1.6.9.29 0000-00-00 ✓ corregido en la última versión

CVE-2026-42384

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to 1.6.11.2 (exclusive). This makes it possible for unauthenticated attackers to extract sensitive user or configuration data.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-39493

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection in versions up to, and including, 1.6.9.27 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-39495

The Simply Schedule Appointments plugin for WordPress is vulnerable to SQL Injection in versions up to, and including, 1.6.9.27 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-39694

The Simply Schedule Appointments plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 1.6.11.0. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2025-69315

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 1.6.9.15. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2025-12166

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to blind SQL Injection via the `order` and `append_where_sql` parameters in all versions up to, and including, 1.6.9.9 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2025-11723

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.5 via the hash() function due to use of a hardcoded fall-back salt. This makes it possible for unauthenticated attackers to generate a valid token across sites running the plugin that have not manually set a salt in the wp-config.php file and access booking information that will allow them to make modifications.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2025-13754

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.16. This is due to the plugin exposing its admin embed endpoint at `/wp-json/ssa/v1/embed-inner-admin` without authentication, which leaks plugin settings including staff names, business names, and configuration data that are not publicly displayed on the booking form. This makes it possible for unauthenticated attackers to extract private business configuration. In premium versions with integrations configured, this might also expose other sensitive data including API keys for external services.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2024-13431

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the accent_color and background parameter in all versions up to, and including, 1.6.8.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2024-7877

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via notification settings in all versions up to, and including, 1.6.7.53 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2024-7876

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin appointment settings in all versions up to, and including, 1.6.7.53 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2024-7129

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.6.7.42 via Twig Template Injection. This makes it possible for authenticated attackers, with administrator-level access and above, to execute code on the server.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2024-4288

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘link’ parameter in versions up to, and including, 1.6.7.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2024-22311

Update the WordPress Simply Schedule Appointments plugin to the latest available version (at least 1.6.6.24). Rafie Muhammad (Patchstack) discovered and reported this Cross Site Scripting (XSS) vulnerability in WordPress Simply Schedule Appointments Plugin. This could allow a malicious actor to inject malicious scripts, such as redirects, advertisements, and other HTML payloads into your website which will be executed when guests visit your site. This vulnerability has been fixed in version 1.6.6.24. This vulnerability was reported to and published by Patchstack. Our users receive alerts and protections up to 48 hours in advance. Have additional information or questions about this entry? Get in touch.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Patchstack

CVE-2024-2342

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the customer_id parameter in all versions up to, and including, 1.6.7.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with contributor access or higher, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2024-2341

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the keys parameter in all versions up to, and including, 1.6.7.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with subscriber access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: CVE.org

CVE-2024-1760

Update the WordPress Simply Schedule Appointments plugin to the latest available version (at least 1.6.6.24). Krzysztof Zając discovered and reported this Cross Site Request Forgery (CSRF) vulnerability in WordPress Simply Schedule Appointments Plugin. This could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication. This vulnerability has been fixed in version 1.6.6.24. Have additional information or questions about this entry? Get in touch.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Patchstack

CVE-2023-50851

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via an unknown parameter in all versions up to 1.6.6.1 (exclusive) due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2022-2374

The Simply Schedule Appointments plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several parameters in versions up to, and including, 1.5.7.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrative level permissions and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2022-2373

The Simply Schedule Appointments plugin for WordPress is vulnerable to sensitive information exposure in versions up to, and including 1.5.7.5 due to missing capability checks on the /wp-json/ssa/v1/users REST API endpoint. This makes it possible for unauthenticated attackers to retrieve a list of email addresses associated with the users that are registered on the site.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2025-1119

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.6.8.5. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2025-4667

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's ssa_admin_upcoming_appointments, ssa_admin_upcoming_appointments, and ssa_past_appointments shortcodes in all versions up to, and including, 1.6.8.30 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-3658

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the 'fields' parameter in all versions up to, and including, 1.6.10.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database, including usernames, email addresses, and password hashes.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-3045

The Appointment Booking Calendar — Simply Schedule Appointments plugin for WordPress is vulnerable to unauthorized access of sensitive data in all versions up to and including 1.6.9.29. This is due to two compounding weaknesses: (1) a non-user-bound `public_nonce` is exposed to unauthenticated users through the public `/wp-json/ssa/v1/embed-inner` REST endpoint, and (2) the `get_item()` method in `SSA_Settings_Api` relies on `nonce_permissions_check()` for authorization (which accepts the public nonce) but does not call `remove_unauthorized_settings_for_current_user()` to filter restricted fields. This makes it possible for unauthenticated attackers to access admin-only plugin settings including the administrator email, phone number, internal access tokens, notification configurations, and developer settings via the `/wp-json/ssa/v1/settings/{section}` endpoint. The exposure of appointment tokens also allows an attacker to modify or cancel appointments.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-1704

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.6.9.29. This is due to the `get_item_permissions_check` method granting access to users with the `ssa_manage_appointments` capability without validating staff ownership of the requested appointment. This makes it possible for authenticated attackers, with custom-level access and above (users granted the ssa_manage_appointments capability, such as Team Members), to view appointment records belonging to other staff members and access sensitive customer personally identifiable information via the appointment ID parameter.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

CVE-2026-1708

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to blind SQL Injection in all versions up to, and including, 1.6.9.27. This is due to the `db_where_conditions` method in the `TD_DB_Model` class failing to prevent the `append_where_sql` parameter from being passed through JSON request bodies, while only checking for its presence in the `$_REQUEST` superglobal. This makes it possible for unauthenticated attackers to append arbitrary SQL commands to queries and extract sensitive information from the database via the `append_where_sql` parameter in JSON payloads granted they have obtained a valid `public_token` that is inadvertently exposed during the booking flow.

Descripción técnica mostrada en el idioma original de la fuente (inglés).

Fuente: Wordfence

Cómo solucionarlo

Mantén Simply Schedule Appointments actualizado — 1.6.12.10 es la última versión en wordpress.org, y cada CVE de arriba indica la versión exacta que lo corrigió ("Corregido en").

Este es el historial completo de vulnerabilidades conocidas del plugin, no un escaneo de una instalación específica — ejecuta un escaneo gratis de tu propio sitio para verificar tu versión instalada exacta.

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