📄 Description (English)
The BuddyPress Groupblog plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.9.3. This is due to the group blog settings handler accepting the `groupblog-blogid`, `default-member`, and `groupblog-silent-add` parameters from user input without proper authorization checks. The `groupblog-blogid` parameter allows any group admin (including Subscribers who create their own group) to associate their group with any blog on the Multisite network, including the main site (blog ID 1). The `default-member` parameter accepts any WordPress role, including `administrator`, without validation against a whitelist. When combined with `groupblog-silent-add`, any user who joins the attacker's group is automatically added to the targeted blog with the injected role. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate any user (including themselves via a second account) to Administrator on the main site of the Multisite network.
🤖 AI Executive Summary
CVE-2026-5144 is a critical privilege escalation vulnerability in BuddyPress Groupblog plugin (versions ≤1.9.3) affecting WordPress Multisite installations. Authenticated subscribers can exploit improper authorization checks to escalate themselves or other users to administrator privileges on any blog in the network, including the main site. This vulnerability requires no patch availability and poses immediate risk to organizations running vulnerable WordPress deployments.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 14:00
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi government agencies, educational institutions, and private sector organizations using WordPress Multisite for internal portals and content management. High-risk sectors include: Government (NCA, CITC, ARAMCO corporate portals), Banking (SAMA-regulated institutions using WordPress for customer-facing platforms), Healthcare (MOH facilities), Telecommunications (STC, Mobily), and Higher Education institutions. The ability to escalate to administrator privileges on main sites could lead to complete infrastructure compromise, data exfiltration, and regulatory violations under SAMA and NCA frameworks.
🏢 Affected Saudi Sectors
Government (NCA, CITC, Ministry portals)
Banking and Financial Services (SAMA-regulated)
Healthcare (MOH, private hospitals)
Energy (ARAMCO, utilities)
Telecommunications (STC, Mobily, Zain)
Higher Education
E-commerce
Media and Publishing
🎯 MITRE ATT&CK Techniques
T1548.002 - Abuse Elevation Control Mechanism: Bypass User Account Control
T1548.003 - Abuse Elevation Control Mechanism: Sudo and Sudo Caching
T1078.001 - Valid Accounts: Default Accounts
T1078.002 - Valid Accounts: Domain Accounts
T1078.003 - Valid Accounts: Local Accounts
T1098.001 - Account Manipulation: Additional Cloud Credentials
T1098.002 - Account Manipulation: Exchange Email Delegate Permissions
T1098.003 - Account Manipulation: Additional Cloud Roles
T1136.001 - Create Account: Local Account
T1136.003 - Create Account: Cloud Account
T1547.014 - Boot or Logon Autostart Execution: Active Setup
T1547.015 - Boot or Logon Autostart Execution: Login Hook
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Disable the BuddyPress Groupblog plugin immediately across all WordPress Multisite installations
2. Audit all group memberships and blog associations created in the past 90 days for unauthorized administrator accounts
3. Review WordPress user roles and remove any suspicious administrator accounts added via group blog functionality
4. Check WordPress audit logs for unauthorized group creation and blog association activities
PATCHING GUIDANCE:
1. Monitor BuddyPress official repository for security patch release (currently no patch available)
2. Do not re-enable plugin until patch version >1.9.3 is released and verified
3. If plugin functionality is critical, implement temporary alternative: use native WordPress Multisite role management without Groupblog
COMPENSATING CONTROLS:
1. Implement WordPress user role restrictions: disable Subscriber group creation via custom code or alternative plugins
2. Deploy Web Application Firewall (WAF) rules to block requests containing 'groupblog-blogid', 'default-member', 'groupblog-silent-add' parameters
3. Enable WordPress security plugin (Wordfence, Sucuri) with strict role change monitoring
4. Implement principle of least privilege: restrict group admin capabilities to trusted users only
5. Deploy SIEM monitoring for WordPress user role elevation events
DETECTION RULES:
1. Monitor WordPress database for wp_usermeta entries with 'wp_X_capabilities' containing 'administrator' role added via group blog context
2. Alert on POST requests to wp-admin/admin-ajax.php with 'groupblog' action parameters
3. Track wp_users table modifications where user_registered date differs significantly from role assignment date
4. Monitor for multiple user accounts created by same IP address followed by group creation and role escalation
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تعطيل إضافة BuddyPress Groupblog فوراً عبر جميع تثبيتات WordPress Multisite
2. تدقيق جميع عضويات المجموعات وجمعيات المدونات التي تم إنشاؤها في آخر 90 يوماً للبحث عن حسابات مسؤول غير مصرح بها
3. مراجعة أدوار مستخدمي WordPress وإزالة أي حسابات مسؤول مريبة تمت إضافتها عبر وظيفة مدونة المجموعة
4. التحقق من سجلات تدقيق WordPress للبحث عن أنشطة إنشاء مجموعات غير مصرح بها وجمعيات المدونات
إرشادات التصحيح:
1. مراقبة مستودع BuddyPress الرسمي لإصدار تصحيح أمني (لا يوجد تصحيح متاح حالياً)
2. عدم إعادة تفعيل الإضافة حتى يتم إصدار الإصدار >1.9.3 والتحقق منه
3. إذا كانت وظيفة الإضافة حرجة، قم بتنفيذ بديل مؤقت: استخدم إدارة الأدوار الأصلية في WordPress Multisite بدون Groupblog
الضوابط التعويضية:
1. تنفيذ قيود أدوار مستخدمي WordPress: تعطيل إنشاء مجموعات المشترك عبر الكود المخصص أو الإضافات البديلة
2. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحظر الطلبات التي تحتوي على معاملات 'groupblog-blogid' و 'default-member' و 'groupblog-silent-add'
3. تفعيل إضافة أمان WordPress (Wordfence, Sucuri) مع مراقبة صارمة لتغييرات الأدوار
4. تنفيذ مبدأ الامتياز الأقل: تقييد قدرات مسؤول المجموعة للمستخدمين الموثوقين فقط
5. نشر مراقبة SIEM لأحداث تصعيد أدوار مستخدمي WordPress
قواعد الكشف:
1. مراقبة قاعدة بيانات WordPress لإدخالات wp_usermeta التي تحتوي على 'wp_X_capabilities' تحتوي على دور 'administrator' تمت إضافته عبر سياق مدونة المجموعة
2. التنبيه على طلبات POST إلى wp-admin/admin-ajax.php مع معاملات إجراء 'groupblog'
3. تتبع تعديلات جدول wp_users حيث يختلف تاريخ user_registered بشكل كبير عن تاريخ تعيين الدور
4. مراقبة حسابات المستخدمين المتعددة التي تم إنشاؤها بواسطة نفس عنوان IP متبوعة بإنشاء مجموعة وتصعيد الدور
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.9.2.1 - User access management and authorization controls
ECC 2024 A.9.4.3 - Password management and access control
ECC 2024 A.12.4.1 - Event logging and monitoring
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management (inventory of vulnerable systems)
SAMA CSF PR.AC-1 - Access Control (authentication and authorization)
SAMA CSF PR.AC-4 - Access Rights (privilege management)
SAMA CSF DE.CM-1 - Detection and Analysis (monitoring and detection)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access control
ISO 27001:2022 A.8.2 - User access management
ISO 27001:2022 A.8.3 - User responsibilities
ISO 27001:2022 A.12.6 - Management of technical vulnerabilities
🟣 PCI DSS v4.0.1
PCI DSS 2.1 - Default security parameters
PCI DSS 6.2 - Security patches and updates
PCI DSS 7.1 - Limit access to system components
PCI DSS 10.2 - Implement automated audit trails
🔗 References & Sources 8
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https://github.com/boonebgorges/bp-groupblog/commit/b824593add9e2c53ef4f0d2e0824d4de078...
security@wordfence.com
https://plugins.trac.wordpress.org/browser/bp-groupblog/tags/1.9.3/bp-groupblog.php#L190
security@wordfence.com
https://plugins.trac.wordpress.org/browser/bp-groupblog/tags/1.9.3/bp-groupblog.php#L220
security@wordfence.com
https://plugins.trac.wordpress.org/browser/bp-groupblog/tags/1.9.3/bp-groupblog.php#L450
security@wordfence.com
https://plugins.trac.wordpress.org/browser/bp-groupblog/trunk/bp-groupblog.php#L190
security@wordfence.com
https://plugins.trac.wordpress.org/browser/bp-groupblog/trunk/bp-groupblog.php#L220
security@wordfence.com
https://plugins.trac.wordpress.org/browser/bp-groupblog/trunk/bp-groupblog.php#L450
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/8129046a-5aa5-4644-babc-0eca9...
security@wordfence.com