📄 Description (English)
vBulletin PHP Module Remote Code Execution Vulnerability — The PHP module within vBulletin contains an unspecified vulnerability that allows for remote code execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.
🤖 AI Executive Summary
CVE-2019-16759 is a critical remote code execution vulnerability in vBulletin's PHP module, exploited via the widgetConfig[code] parameter in ajax/render/widget_php requests. With a CVSS score of 9.0 and a publicly available exploit, unauthenticated attackers can execute arbitrary PHP code on vulnerable servers, leading to full system compromise. This vulnerability has been actively exploited in the wild since its disclosure in September 2019 and remains a significant threat to organizations running unpatched vBulletin installations. The combination of ease of exploitation and severe impact makes this an urgent patching priority.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 14, 2026 19:38
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations operating community forums, government portals, and educational platforms built on vBulletin are at significant risk. Government entities under NCA oversight running citizen engagement portals, telecom providers like STC and Mobily hosting customer community forums, and educational institutions under the Ministry of Education using vBulletin for student/faculty communities face direct exposure. Healthcare organizations using vBulletin for patient or staff portals could expose sensitive health data. Successful exploitation could lead to data exfiltration of user PII, credential theft, lateral movement into internal networks, and deployment of ransomware or cryptominers — all of which carry regulatory implications under NCA ECC and PDPL (Personal Data Protection Law). Saudi government entities that have not conducted regular vulnerability assessments may still be running vulnerable vBulletin versions given the age of this CVE.
🏢 Affected Saudi Sectors
Government
Education
Telecom
Healthcare
Banking
Media
Retail
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all vBulletin installations across your environment using asset inventory tools.
2. Immediately take vulnerable vBulletin instances offline or block external access if patching cannot be done immediately.
3. Review web server access logs for requests containing 'ajax/render/widget_php' and 'widgetConfig[code]' to detect potential exploitation attempts.
PATCHING GUIDANCE:
1. Upgrade vBulletin to version 5.5.2, 5.5.3, or 5.5.4 with the security patch applied (patches released September 2019).
2. For vBulletin 5.x, apply the official security patch from vBulletin.com immediately.
3. Verify patch integrity after application by testing the vulnerable endpoint.
COMPENSATING CONTROLS (if patching is delayed):
1. Deploy WAF rules to block requests to 'ajax/render/widget_php' endpoint or containing 'widgetConfig[code]' parameter.
2. Disable the PHP widget functionality in vBulletin admin panel under Plugins & Products.
3. Implement IP allowlisting for admin panel access.
4. Place vBulletin behind a reverse proxy with strict input validation.
DETECTION RULES:
1. SIEM Alert: Monitor HTTP POST requests to '/ajax/render/widget_php' with body containing 'widgetConfig[code]'.
2. IDS/IPS Signature: Flag requests with 'routestring=ajax/render/widget_php' in URI.
3. Enable PHP error logging and monitor for unexpected code execution patterns.
4. Deploy file integrity monitoring on vBulletin directories to detect webshell placement.
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات vBulletin عبر بيئتك باستخدام أدوات جرد الأصول.
2. إيقاف تشغيل نسخ vBulletin المعرضة للخطر فوراً أو حجب الوصول الخارجي إذا تعذّر التصحيح الفوري.
3. مراجعة سجلات الوصول لخادم الويب بحثاً عن طلبات تحتوي على 'ajax/render/widget_php' و'widgetConfig[code]' للكشف عن محاولات الاستغلال المحتملة.
إرشادات التصحيح:
1. الترقية إلى vBulletin الإصدار 5.5.2 أو 5.5.3 أو 5.5.4 مع تطبيق التصحيح الأمني الصادر في سبتمبر 2019.
2. بالنسبة لـ vBulletin 5.x، تطبيق التصحيح الأمني الرسمي من vBulletin.com فوراً.
3. التحقق من سلامة التصحيح بعد تطبيقه عن طريق اختبار نقطة النهاية المعرضة للخطر.
ضوابط التعويض (في حالة تأخر التصحيح):
1. نشر قواعد WAF لحجب الطلبات الموجهة إلى نقطة النهاية 'ajax/render/widget_php' أو التي تحتوي على معامل 'widgetConfig[code]'.
2. تعطيل وظيفة PHP widget في لوحة إدارة vBulletin ضمن Plugins & Products.
3. تطبيق قائمة السماح بعناوين IP للوصول إلى لوحة الإدارة.
4. وضع vBulletin خلف وكيل عكسي مع التحقق الصارم من المدخلات.
قواعد الكشف:
1. تنبيه SIEM: مراقبة طلبات HTTP POST إلى '/ajax/render/widget_php' مع محتوى يتضمن 'widgetConfig[code]'.
2. توقيع IDS/IPS: الإشارة إلى الطلبات التي تحتوي على 'routestring=ajax/render/widget_php' في URI.
3. تفعيل تسجيل أخطاء PHP ومراقبة أنماط تنفيذ الكود غير المتوقعة.
4. نشر مراقبة سلامة الملفات على مجلدات vBulletin للكشف عن زرع Web Shell.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Cybersecurity Vulnerability Management
ECC-1-3-2: Cybersecurity Patch Management
ECC-2-3-1: Web Application Security
ECC-1-5-1: Cybersecurity Event Logging and Monitoring
ECC-2-2-3: Network Security — Web Application Firewall
🔵 SAMA CSF
Protect — PR.IP-12: Vulnerability Management Plan
Protect — PR.PT-3: Principle of Least Functionality
Detect — DE.CM-8: Vulnerability Scans
Respond — RS.MI-3: Newly Identified Vulnerabilities Mitigated
Protect — PR.DS-6: Integrity Checking Mechanisms
🟡 ISO 27001:2022
A.12.6.1: Management of Technical Vulnerabilities
A.14.2.2: System Change Control Procedures
A.14.1.2: Securing Application Services on Public Networks
A.16.1.1: Responsibilities and Procedures for Incident Management
A.12.4.1: Event Logging
🟣 PCI DSS v4.0
Requirement 6.3.3: All System Components Protected from Known Vulnerabilities by Installing Applicable Security Patches
Requirement 6.4.1: Web-Facing Applications Protected Against Known Attacks
Requirement 11.3.1: Internal Vulnerability Scans Performed
Requirement 10.4.1: Audit Logs Reviewed for Security Events
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
vBulletin:vBulletin