📄 Description (English)
The Custom Block Builder – Lazy Blocks plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.2.0 via multiple functions in the 'LazyBlocks_Blocks' class. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server.
🤖 AI Executive Summary
CVE-2026-1560 is a critical Remote Code Execution vulnerability in the Custom Block Builder – Lazy Blocks WordPress plugin (versions ≤4.2.0) that allows authenticated contributors and above to execute arbitrary code on affected servers. With a CVSS score of 8.8, this poses significant risk to WordPress installations used by Saudi organizations. Immediate patching to version 4.2.1 or later is essential, particularly for government, banking, and healthcare sectors relying on WordPress-based platforms.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 22, 2026 10:25
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations across multiple sectors: (1) Government entities using WordPress for citizen services and internal portals risk unauthorized access and data exfiltration; (2) Banking sector institutions using WordPress for customer-facing applications face potential financial data compromise and regulatory violations under SAMA guidelines; (3) Healthcare providers relying on WordPress for patient portals risk HIPAA-equivalent violations under Saudi health regulations; (4) Telecom operators (STC, Mobily) using WordPress for service portals face service disruption and customer data exposure; (5) Educational institutions and research centers risk intellectual property theft. The vulnerability's requirement for authenticated access (Contributor level) means insider threats and compromised accounts pose immediate risk.
🏢 Affected Saudi Sectors
Government
Banking and Financial Services
Healthcare
Telecommunications
Education
Energy
Retail and E-commerce
Media and Publishing
🎯 MITRE ATT&CK Techniques
T1190 - Exploit Public-Facing Application
T1059 - Command and Scripting Interpreter
T1059.007 - Command and Scripting Interpreter: JavaScript
T1059.008 - Command and Scripting Interpreter: PowerShell
T1098 - Valid Accounts
T1098.001 - Valid Accounts: Default Accounts
T1098.002 - Valid Accounts: Domain Accounts
T1110 - Brute Force
T1133 - External Remote Services
T1199 - Trusted Relationship
T1505 - Server Software Component
T1505.003 - Server Software Component: Web Shell
T1547 - Boot or Logon Autostart Execution
T1547.014 - Boot or Logon Autostart Execution: Kernel Modules and Extensions
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all WordPress installations using Lazy Blocks plugin version 4.2.0 or earlier across your organization
2. Audit user accounts with Contributor-level access and above; review recent activity logs for suspicious code execution patterns
3. Implement temporary access restrictions: disable Lazy Blocks plugin functionality until patching is complete
PATCHING GUIDANCE:
1. Update Lazy Blocks plugin to version 4.2.1 or later immediately
2. Test updates in staging environment before production deployment
3. Verify plugin functionality post-update; check for broken blocks or content rendering issues
COMPENSATING CONTROLS (if immediate patching delayed):
1. Restrict Contributor-level access to trusted personnel only; implement principle of least privilege
2. Monitor WordPress user role assignments; disable unnecessary user accounts
3. Implement Web Application Firewall (WAF) rules to detect suspicious LazyBlocks function calls
4. Enable WordPress security plugins with code execution detection capabilities
DETECTION RULES:
1. Monitor WordPress logs for LazyBlocks_Blocks class method calls from non-admin users
2. Alert on any POST requests to wp-admin containing 'lazy_blocks' parameters from Contributor accounts
3. Monitor for unusual PHP execution patterns in wp-content/plugins/lazy-blocks/ directory
4. Track database modifications to wp_options table related to lazy_blocks settings
5. Implement file integrity monitoring on plugin files; alert on unauthorized modifications
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات WordPress التي تستخدم إضافة Lazy Blocks الإصدار 4.2.0 أو أقدم عبر مؤسستك
2. تدقيق حسابات المستخدمين بمستوى المساهم وما فوق؛ مراجعة سجلات النشاط الأخيرة للأنماط المريبة لتنفيذ الأكواد
3. تطبيق قيود الوصول المؤقتة: تعطيل وظائف إضافة Lazy Blocks حتى اكتمال التصحيح
إرشادات التصحيح:
1. تحديث إضافة Lazy Blocks إلى الإصدار 4.2.1 أو أحدث فوراً
2. اختبار التحديثات في بيئة التطوير قبل نشرها في الإنتاج
3. التحقق من وظائف الإضافة بعد التحديث؛ التحقق من الكتل المكسورة أو مشاكل عرض المحتوى
الضوابط البديلة (إذا تأخر التصحيح الفوري):
1. تقييد الوصول على مستوى المساهم للموظفين الموثوقين فقط؛ تطبيق مبدأ الحد الأدنى من الامتيازات
2. مراقبة تعيينات أدوار مستخدمي WordPress؛ تعطيل حسابات المستخدمين غير الضرورية
3. تطبيق قواعد جدار حماية تطبيقات الويب (WAF) للكشف عن استدعاءات وظائف LazyBlocks المريبة
4. تفعيل إضافات أمان WordPress مع قدرات الكشف عن تنفيذ الأكواد
قواعد الكشف:
1. مراقبة سجلات WordPress لاستدعاءات فئة LazyBlocks_Blocks من المستخدمين غير المسؤولين
2. التنبيه على أي طلبات POST إلى wp-admin تحتوي على معاملات 'lazy_blocks' من حسابات المساهمين
3. مراقبة أنماط تنفيذ PHP غير العادية في دليل wp-content/plugins/lazy-blocks/
4. تتبع تعديلات قاعدة البيانات على جدول wp_options المتعلقة بإعدادات lazy_blocks
5. تطبيق مراقبة سلامة الملفات على ملفات الإضافة؛ التنبيه على التعديلات غير المصرح بها
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information Security Policies and Procedures
A.6.1.1 - Internal Organization
A.6.2.1 - Mobile Device Management
A.7.1.1 - Access Control Policy
A.8.1.1 - Cryptography
A.8.2.1 - Malware Protection
A.8.3.1 - Management of Technical Vulnerabilities
A.12.2.1 - Restrictions on Software Installation
A.12.6.1 - Management of Technical Vulnerabilities
🔵 SAMA CSF
Governance (GV) - GV-RO-01: Risk Oversight
Governance (GV) - GV-RM-01: Risk Management Program
Protect (PR) - PR-AC-01: Access Control
Protect (PR) - PR-DS-01: Data Security
Protect (PR) - PR-IP-01: Information Protection Processes and Procedures
Detect (DE) - DE-CM-01: Anomalies and Events
Respond (RS) - RS-RP-01: Response Planning
🟡 ISO 27001:2022
5.1 - Policies for information security
6.1 - Information security roles and responsibilities
6.2 - Information security coordination
7.1 - General
7.2 - Permissions and access rights
8.1 - Risk assessment
8.2 - Risk treatment
8.3 - Information security controls
A.5.1.1 - Policies for information security
A.6.1.1 - Information security roles and responsibilities
A.8.1.1 - User endpoint devices
A.8.2.1 - Privileged access rights
A.8.3.1 - Information access restriction
A.12.2.1 - Restrictions on software installation
A.12.6.1 - Management of technical vulnerabilities
🟣 PCI DSS v4.0.1
1.1 - Firewall configuration standards
2.1 - Always change vendor-supplied defaults
6.2 - Ensure all system components are protected from known vulnerabilities
6.5.1 - Injection flaws
11.2 - Run automated vulnerability scanning tools
🔗 References & Sources 5
🔗
🔗
🔗
🔗
🔗
https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L766
security@wordfence.com
https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-rest.php#L88
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3454012/
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/b1853c88-277b-4955-b042-aeed1...
security@wordfence.com