{"id":48170,"date":"2026-04-20T21:47:42","date_gmt":"2026-04-20T21:47:42","guid":{"rendered":"http:\/\/localhost\/?p=48170"},"modified":"2026-04-20T21:47:42","modified_gmt":"2026-04-20T21:47:42","slug":"responsive-blocks-220-unauthenticated-open-email-relay-via-rest-api-emailto-parameter","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=48170","title":{"rendered":"Responsive Blocks <= 2.2.0 - Unauthenticated Open Email Relay via REST API 'email_to' Parameter_CVE-2026-6675"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;The Responsive Blocks \u2013 Page Builder for Blocks \\u0026 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. 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