📄 Description (English)
The Brevo for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘user_connection_id’ parameter in all versions up to, and including, 4.0.49 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
🤖 AI Executive Summary
The Brevo for WooCommerce plugin contains a critical Stored Cross-Site Scripting (XSS) vulnerability affecting versions up to 4.0.49. Unauthenticated attackers can inject malicious scripts via the 'user_connection_id' parameter that persist and execute for all users accessing affected pages. This vulnerability poses significant risk to e-commerce platforms in Saudi Arabia, particularly those handling customer data and payment information through WooCommerce-based stores.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 8, 2026 08:18
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi e-commerce sector, particularly small and medium enterprises (SMEs) using WooCommerce with Brevo integration for email marketing. Banking sector at risk if payment gateways are integrated with affected stores. Government e-commerce platforms and healthcare providers offering online services vulnerable to data theft and customer credential compromise. Telecom providers (STC, Mobily, Zain) operating e-commerce platforms face reputational damage and potential SAMA/NCA regulatory violations. Risk of customer data exfiltration affecting ARAMCO and energy sector supply chain portals.
🏢 Affected Saudi Sectors
E-commerce and Retail
Banking and Financial Services
Government and Public Sector
Healthcare
Telecommunications
Energy and Utilities
Hospitality and Tourism
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all WooCommerce installations using Brevo plugin versions up to 4.0.49
2. Disable the Brevo plugin immediately if patch is not yet applied
3. Review access logs for suspicious 'user_connection_id' parameter values
4. Audit stored data for injected malicious scripts
PATCHING:
1. Update Brevo for WooCommerce plugin to version 4.0.50 or later immediately
2. Test updates in staging environment before production deployment
3. Clear all caches after patching
COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement Web Application Firewall (WAF) rules to block suspicious 'user_connection_id' parameters
2. Apply input validation regex: ^[a-zA-Z0-9_-]+$ for user_connection_id
3. Enable Content Security Policy (CSP) headers to restrict script execution
4. Implement output encoding for all user-supplied parameters
DETECTION:
1. Monitor for POST/GET requests containing script tags in user_connection_id parameter
2. Alert on base64-encoded payloads in parameter values
3. Search database for <script>, javascript:, onerror=, onload= patterns in connection ID fields
4. Review WordPress admin audit logs for unauthorized plugin modifications
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات WooCommerce التي تستخدم إصدارات مكون Brevo حتى 4.0.49
2. تعطيل مكون Brevo فوراً إذا لم يتم تطبيق التصحيح بعد
3. مراجعة سجلات الوصول للقيم المريبة في معامل 'user_connection_id'
4. تدقيق البيانات المخزنة للبحث عن نصوص برمجية ضارة مُدرجة
التصحيح:
1. تحديث مكون Brevo لـ WooCommerce إلى الإصدار 4.0.50 أو أحدث فوراً
2. اختبار التحديثات في بيئة التطوير قبل نشرها في الإنتاج
3. مسح جميع ذاكرات التخزين المؤقت بعد التصحيح
الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تطبيق قواعد جدار حماية تطبيقات الويب (WAF) لحجب معاملات 'user_connection_id' المريبة
2. تطبيق التحقق من الإدخال: ^[a-zA-Z0-9_-]+$ لـ user_connection_id
3. تفعيل رؤوس سياسة أمان المحتوى (CSP) لتقييد تنفيذ النصوص البرمجية
4. تطبيق ترميز الإخراج لجميع المعاملات المزودة من قبل المستخدم
الكشف:
1. مراقبة طلبات POST/GET التي تحتوي على علامات نصية في معامل user_connection_id
2. تنبيه على الحمولات المشفرة بـ base64 في قيم المعاملات
3. البحث في قاعدة البيانات عن أنماط <script>، javascript:، onerror=، onload=
4. مراجعة سجلات تدقيق WordPress الإدارية للتعديلات غير المصرح بها على المكونات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.14.2.1 - Information security requirements for supplier relationships
ECC 2024 A.14.2.5 - Addressing information security in supplier agreements
ECC 2024 A.5.23 - Web application security controls
ECC 2024 A.6.14 - Secure development and change management
🔵 SAMA CSF
SAMA CSF 1.1 - Governance and Risk Management
SAMA CSF 2.2 - Information and Communications Technology (ICT) Security
SAMA CSF 3.3 - Third-party and supply chain risk management
SAMA CSF 4.1 - Detection and response capabilities
🟡 ISO 27001:2022
ISO 27001:2022 A.5.23 - Web application security
ISO 27001:2022 A.6.5 - Access control
ISO 27001:2022 A.8.3 - Cryptography
ISO 27001:2022 A.12.6 - Change management
ISO 27001:2022 A.14.2 - Supplier relationships
🟣 PCI DSS v4.0.1
PCI DSS 6.5.7 - Cross-site scripting (XSS)
PCI DSS 6.5.1 - Injection flaws
PCI DSS 6.2 - Security patches and updates
PCI DSS 12.8 - Vendor management
🔗 References & Sources 7
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https://plugins.trac.wordpress.org/browser/woocommerce-sendinblue-newsletter-subscripti...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/woocommerce-sendinblue-newsletter-subscripti...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/woocommerce-sendinblue-newsletter-subscripti...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/woocommerce-sendinblue-newsletter-subscripti...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/woocommerce-sendinblue-newsletter-subscripti...
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3434903/woocommerce-sendinblue-newsletter-...
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/670f4e26-75c9-40cd-8088-2fa4c...
security@wordfence.com