📄 Description (English)
The Webmention plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.6.2 in the 'MF2::parse_authorpage' function via the 'Receiver::post' function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
🤖 AI Executive Summary
The Webmention plugin for WordPress contains a Server-Side Request Forgery (SSRF) vulnerability in versions up to 5.6.2 that allows unauthenticated attackers to make arbitrary web requests from the affected server. This vulnerability can be exploited to access internal services, query sensitive data, and potentially modify information on internal networks. With a CVSS score of 7.2 and no patch currently available, this poses a significant risk to WordPress installations using this plugin.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 8, 2026 21:44
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations operating WordPress-based websites and content management systems are at significant risk, particularly: (1) Government agencies and ministries using WordPress for public-facing portals and internal communications; (2) Banking and financial institutions using WordPress for customer-facing websites and information portals; (3) Healthcare providers and MEWA-regulated entities using WordPress for patient information systems; (4) Telecommunications companies (STC, Mobily, Zain) using WordPress for service portals; (5) E-commerce and retail sectors relying on WordPress. The SSRF vulnerability could allow attackers to access internal SAMA banking systems, NCA government networks, or internal service infrastructure if WordPress servers are positioned on the same network segments.
🏢 Affected Saudi Sectors
Government and Public Administration
Banking and Financial Services
Healthcare and Medical Services
Telecommunications
E-commerce and Retail
Education
Media and Publishing
Energy and Utilities
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Audit all WordPress installations to identify if Webmention plugin is installed and active
2. If installed, immediately disable and deactivate the Webmention plugin
3. Remove the plugin files from the WordPress installation directory
4. Review access logs for suspicious requests to the 'MF2::parse_authorpage' or 'Receiver::post' functions
COMPENSATING CONTROLS (until patch available):
1. Implement Web Application Firewall (WAF) rules to block requests to internal IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.1)
2. Restrict outbound connections from WordPress servers using network segmentation and firewall policies
3. Implement rate limiting on WordPress endpoints to prevent SSRF exploitation
4. Deploy IDS/IPS signatures to detect SSRF patterns in HTTP requests
5. Use reverse proxy to validate and sanitize all incoming requests
DETECTION RULES:
1. Monitor for POST requests to WordPress with unusual 'Receiver::post' parameters
2. Alert on outbound connections from WordPress servers to internal IP addresses
3. Track failed authentication attempts combined with SSRF-like request patterns
4. Monitor for requests containing internal hostnames or IP addresses in parameters
PATCHING GUIDANCE:
1. Monitor official Webmention plugin repository for security updates
2. Once patch is released, test in staging environment before production deployment
3. Consider alternative plugins with active security maintenance if Webmention remains unmaintained
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع تثبيتات WordPress لتحديد ما إذا كان مكون Webmention مثبتاً ونشطاً
2. إذا كان مثبتاً، قم بتعطيل وإلغاء تنشيط مكون Webmention فوراً
3. احذف ملفات المكون من دليل تثبيت WordPress
4. راجع سجلات الوصول للطلبات المريبة إلى وظائف 'MF2::parse_authorpage' أو 'Receiver::post'
الضوابط التعويضية (حتى توفر التصحيح):
1. تنفيذ قواعد جدار حماية تطبيقات الويب (WAF) لحجب الطلبات إلى نطاقات IP الداخلية
2. تقييد الاتصالات الصادرة من خوادم WordPress باستخدام تقسيم الشبكة وسياسات جدار الحماية
3. تنفيذ تحديد معدل على نقاط نهاية WordPress لمنع استغلال SSRF
4. نشر توقيعات IDS/IPS للكشف عن أنماط SSRF في طلبات HTTP
5. استخدام وكيل عكسي للتحقق من صحة وتنظيف جميع الطلبات الواردة
قواعد الكشف:
1. مراقبة طلبات POST إلى WordPress بمعاملات 'Receiver::post' غير عادية
2. تنبيه الاتصالات الصادرة من خوادم WordPress إلى عناوين IP الداخلية
3. تتبع محاولات المصادقة الفاشلة مع أنماط طلبات تشبه SSRF
4. مراقبة الطلبات التي تحتوي على أسماء مضيفين أو عناوين IP داخلية في المعاملات
إرشادات التصحيح:
1. مراقبة مستودع مكون Webmention الرسمي للتحديثات الأمنية
2. بمجرد إصدار التصحيح، اختبره في بيئة التطوير قبل نشره في الإنتاج
3. فكر في المكونات البديلة ذات الصيانة الأمنية النشطة إذا ظل Webmention غير مصان
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.14.2.1 - Information security requirements for supplier relationships
ECC 2024 A.8.2.3 - User access management and authentication
ECC 2024 A.13.1.3 - Segregation of networks
ECC 2024 A.13.2.1 - Security of network services
🔵 SAMA CSF
SAMA CSF ID.BE-3.2 - Third-party risk management
SAMA CSF PR.AC-1.1 - Access control policy and procedures
SAMA CSF PR.DS-2.1 - Data security and protection
SAMA CSF DE.CM-1.1 - Detection and analysis of anomalies
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Supplier relationships
ISO 27001:2022 A.8.1.1 - User registration and de-registration
ISO 27001:2022 A.8.2.1 - User access provisioning
ISO 27001:2022 A.13.1.1 - Network security perimeter
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates
PCI DSS 6.5.1 - Injection flaws prevention
PCI DSS 6.5.10 - Broken authentication prevention
PCI DSS 11.3 - Penetration testing and vulnerability scanning
🔗 References & Sources 5
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https://github.com/pfefferle/wordpress-webmention/blob/057223cee18a9e93b017d0f21db6ea77...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/class-receive...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/handler/class...
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3494831/webmention
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/08d15c46-d15f-4803-80be-90bf3...
security@wordfence.com