CVE-2026-6675— Responsive Blocks <= 2.2.0 - Unauthenticated Open Email Relay via REST API 'email_to' Parameter
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-6675
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Responsive Blocks <= 2.2.0 - Unauthenticated Open Email Relay via REST API 'email_to' Parameter
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Responsive Blocks – Page Builder for Blocks & Patterns 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Responsive Blocks – Page Builder for Blocks & Patterns 2.2.0及之前版本存在输入验证错误漏洞，该漏洞源于授权检查不足以及通过公共REST API路由提供的收件
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| cyberchimps | Responsive Blocks – Page Builder for Blocks & Patterns | 0 ~ 2.2.0 | - |
II. Public POCs for CVE-2026-6675
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-6675
请登录查看更多情报信息。
IV. Related Vulnerabilities
Same vendor: cyberchimps
- CVE-2026-6703
Responsive Blocks <= 2.2.1 - Missing Authorization to Authen - CVE-2026-32543
WordPress Responsive Blocks plugin <= 2.2.0 - Broken Access - CVE-2025-69363
WordPress Responsive Addons for Elementor plugin <= 2.0.8 - - CVE-2025-8215
Responsive Addons for Elementor <= 2.0.1 - Authenticated (Co - CVE-2025-54050
WordPress Responsive Addons for Elementor plugin <= 1.7.3 -
Same weakness: CWE-20
V. Comments for CVE-2026-6675
No comments yet