Descripción
The Responsive Blocks – Page Builder for Blocks & Patterns plugin for WordPress is vulnerable to Unauthenticated Open Email Relay in all versions up to, and including, 2.2.0. This is due to insufficient authorization checks and missing server-side validation of the recipient email address supplied via a public REST API route. This makes it possible for unauthenticated attackers to send arbitrary emails to any recipient of their choosing through the affected WordPress site-s mail server, effectively turning the site into an open mail relay.
CVSS 5.3EPSS 0.325%Riesgo 0.55
Ver fuente- Publicación
- 2026-04-21 03:16:09
- Versiones afectadas
- <=2.2.0
- Tipo
- Installed app
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N