📄 Description (English)
XenForo before 2.3.5 allows OAuth2 client applications to request unauthorized scopes. This affects any customer using OAuth2 clients on any version of XenForo 2.3 prior to 2.3.5, potentially allowing client applications to gain access beyond their intended authorization level.
🤖 AI Executive Summary
CVE-2025-71278 is a critical authorization bypass vulnerability in XenForo versions prior to 2.3.5 that allows OAuth2 client applications to request and obtain unauthorized scopes beyond their intended permissions. With a CVSS score of 8.8, this vulnerability could enable attackers to escalate privileges and access sensitive user data or administrative functions. Organizations running XenForo 2.3.x community platforms must prioritize immediate patching to prevent unauthorized access to user information and system compromise.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 22, 2026 06:15
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations operating XenForo-based community platforms, particularly in government agencies, educational institutions, and large enterprises using XenForo for internal collaboration or customer engagement. The authorization bypass could expose sensitive user data including personal information, communications, and administrative credentials. Saudi banking and financial services sectors using XenForo for customer portals face elevated risk of data breach and regulatory non-compliance with SAMA requirements. Government entities under NCA oversight could face critical security incidents affecting citizen data protection. Telecom operators and large enterprises using XenForo for community management are at risk of unauthorized access to customer information and system compromise.
🏢 Affected Saudi Sectors
Government and Public Administration
Education and Universities
Banking and Financial Services
Healthcare and Medical Institutions
Telecommunications
Large Enterprises and Corporations
E-commerce and Retail
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all XenForo installations running versions 2.3.0 through 2.3.4 in your environment
2. Audit all registered OAuth2 client applications and their requested scopes
3. Review OAuth2 access logs for suspicious scope requests or unusual client behavior
4. Disable or revoke OAuth2 clients that are not actively used
PATCHING GUIDANCE:
1. Upgrade XenForo to version 2.3.5 or later immediately
2. Test the upgrade in a staging environment before production deployment
3. After patching, re-validate all OAuth2 client scope configurations
4. Force re-authentication of all active OAuth2 sessions
COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement network-level restrictions on OAuth2 endpoints
2. Monitor and log all OAuth2 authorization requests with detailed scope information
3. Implement strict scope validation at the application level
4. Disable OAuth2 functionality if not actively required
5. Restrict OAuth2 client registration to trusted applications only
DETECTION RULES:
1. Alert on OAuth2 scope requests that exceed pre-approved scopes for known clients
2. Monitor for repeated failed OAuth2 authorization attempts
3. Track changes to OAuth2 client configurations
4. Alert on new OAuth2 client registrations
5. Monitor for access to sensitive endpoints via OAuth2 tokens with unexpected scopes
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات XenForo التي تعمل بالإصدارات 2.3.0 إلى 2.3.4 في بيئتك
2. تدقيق جميع تطبيقات عملاء OAuth2 المسجلة والنطاقات المطلوبة
3. مراجعة سجلات وصول OAuth2 للطلبات المريبة للنطاقات أو السلوك غير المعتاد للعميل
4. تعطيل أو إلغاء عملاء OAuth2 التي لا تُستخدم بنشاط
إرشادات التصحيح:
1. ترقية XenForo إلى الإصدار 2.3.5 أو أحدث على الفور
2. اختبار الترقية في بيئة التطوير قبل نشرها في الإنتاج
3. بعد التصحيح، أعد التحقق من جميع تكوينات نطاق عميل OAuth2
4. فرض إعادة المصادقة لجميع جلسات OAuth2 النشطة
الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تنفيذ قيود على مستوى الشبكة على نقاط نهاية OAuth2
2. مراقبة وتسجيل جميع طلبات تفويض OAuth2 مع معلومات النطاق التفصيلية
3. تنفيذ التحقق الصارم من النطاق على مستوى التطبيق
4. تعطيل وظيفة OAuth2 إذا لم تكن مطلوبة بنشاط
5. تقييد تسجيل عميل OAuth2 للتطبيقات الموثوقة فقط
قواعد الكشف:
1. تنبيه على طلبات نطاق OAuth2 التي تتجاوز النطاقات المعتمة مسبقاً للعملاء المعروفين
2. مراقبة محاولات تفويض OAuth2 الفاشلة المتكررة
3. تتبع التغييرات في تكوينات عميل OAuth2
4. تنبيه على تسجيلات عميل OAuth2 الجديدة
5. مراقبة الوصول إلى نقاط النهاية الحساسة عبر رموز OAuth2 مع نطاقات غير متوقعة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policy
ECC 2024 A.6.1.2 - User Registration and Access Rights Management
ECC 2024 A.6.2.1 - User Access Rights Review
ECC 2024 A.9.2.1 - User Access Management
ECC 2024 A.9.4.3 - Password Management System
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management
SAMA CSF PR.AC-1 - Access Control Policy and Procedures
SAMA CSF PR.AC-4 - Access Rights and Privileges
SAMA CSF DE.CM-1 - Detection and Analysis
🟡 ISO 27001:2022
ISO 27001:2022 A.5.2 - Information Security Policies
ISO 27001:2022 A.6.2 - User Access Management
ISO 27001:2022 A.8.2 - Privileged Access Rights
ISO 27001:2022 A.8.3 - Information Access Restriction
🟣 PCI DSS v4.0
PCI DSS 2.1 - Default Security Parameters
PCI DSS 6.5.10 - Broken Authentication
PCI DSS 7.1 - Limit Access to System Components
📦 Affected Products / CPE 1 entries
xenforo:xenforo