CVE-2026-6675 — The Responsive Blocks – Page Builder for Blocks & Patterns
CVE-2026-6675 — 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 ad
What This Means For You
- If your environment is affected by CWE-20, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-6675 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-6675 - Unauthenticated Open Email Relay via WordPress REST API
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-6675 | vulnerability | CVE-2026-6675 |
| CWE-20 | weakness | CWE-20 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 21, 2026 at 06:16 UTC |
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