Responsive Blocks – Page Builder for Blocks & Patterns < 2.3.0 — Unauthenticated Arbitrary HTML Injection in Notification Email
CVE-2026-97315Published · Updated Action summary
Affected: <2.3.0Update to 2.3.0 or newer
All remediation steps- Severity
- Medium4.7
- CVSS
- 4.7CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:CScope- Changed
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.2% chance in 30 days13th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Responsive Blocks – Page Builder for Blocks & Patterns responsive-block-editor-addons
- Affected< 2.3.0
- Patched in2.3.0
Update to 2.3.0 or newer.
You are affected if you run < 2.3.0. Version 2.3.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Responsive Blocks – Page Builder for Blocks & Patterns.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.3.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Responsive Blocks – Page Builder for Blocks & Patterns to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Amin Guliyev.
The Responsive Blocks – Page Builder for Blocks & Patterns plugin for WordPress is vulnerable to Cross-Site Scripting in all versions up to 2.3.0. This is due to missing sanitization of user-supplied site_name, site_url, and page_url parameters passed to the REST API form handler and embedded directly into the HTML notification email. This makes it possible for unauthenticated attackers to inject arbitrary HTML into notification emails sent to the site owner, enabling phishing attacks against administrators. The site must have a Form block published on a page.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
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| Medium4.3 | Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via AJAX Actions 2.0.9 – 2.2.1Update to 2.2.2 | CVE-2026-6703 | |
| Medium5.3 | Unauthenticated Open Email Relay via REST API 'email_to' Parameter ≤2.2.0Update to 2.2.1 | CVE-2026-6675 | |
| Medium5.3 | Missing Authorization ≤2.2.0Update to 2.2.1 | CVE-2026-32543 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.0.6Update to 2.0.7 | CVE-2025-53202 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.0.5Update to 2.0.6 | CVE-2025-49881 |
- Medium4.3Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via AJAX Actions
2.0.9 – 2.2.1Update to 2.2.2
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≤2.2.0Update to 2.2.1
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≤2.2.0Update to 2.2.1
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≤2.0.6Update to 2.0.7
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤2.0.5Update to 2.0.6
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
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| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
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Chatterbug Forms – Fast, Flexible WordPress Form Builder
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ELEX WordPress HelpDesk & Customer Ticketing System
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Timeline
CVE published
Severity medium, CVSS 4.7
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.