The Responsive Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.0.2 due to insufficient input sanitization and output escaping. 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.
CVE-2025-39578 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Responsive Blocks – Page Builder for Blocks & Patterns. It affects Versions up to 2.0.2 and is fixed in 2.0.3.
CVE-2025-39578 is tracked for the Plugin Responsive Blocks – Page Builder for Blocks & Patterns as medium severity with CVSS 6.4. The affected range is Versions up to 2.0.2. Update Responsive Blocks – Page Builder for Blocks & Patterns to 2.0.3 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
responsive-block-editor-addons
View on wordpress.org
|
| CVE | CVE-2025-39578 |
| Patched Versions |
2.0.3
|
| Affected Versions |
Versions up to 2.0.2
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Responsive Blocks <= 2.0.6 - Authenticated (Contributor+) Stored Cross-Site Scripting
Responsive Blocks <= 2.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting
Responsive Blocks <= 1.9.9 - Authenticated (Contributor+) Stored Cross-Site Scripting
Responsive Blocks – WordPress Gutenberg Blocks <= 1.9.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via section_tag Parameter
Responsive Blocks – WordPress Gutenberg Blocks <= 1.9.7 - Authenticated (Contributor+) Stored Cross-Site Scripting
Responsive Blocks – WordPress Gutenberg Blocks <= 1.8.8 - Authenticated (Contributor+) Stored Cross-Site Scripting
Responsive Blocks <= 2.2.0 - Unauthenticated Open Email Relay via REST API 'email_to' Parameter
Responsive Blocks – Page Builder for Blocks & Patterns <= 2.2.0 - Missing Authorization
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