📄 Description (English)
CouchCMS 2.2.1 contains a cross-site scripting vulnerability that allows authenticated attackers to execute arbitrary JavaScript by uploading malicious SVG files through the file upload functionality. Attackers can upload SVG files containing embedded script tags to the browse.php endpoint, which are then executed in users' browsers when the files are accessed or previewed.
🤖 AI Executive Summary
CouchCMS 2.2.1 contains a stored cross-site scripting (XSS) vulnerability in its file upload functionality that allows authenticated attackers to execute arbitrary JavaScript through malicious SVG files. The vulnerability affects the browse.php endpoint where uploaded SVG files with embedded script tags are executed in users' browsers during file access or preview. While requiring authentication, this poses a significant risk to organizations using CouchCMS for content management, particularly in multi-user environments where insider threats or compromised accounts could be leveraged.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 26, 2026 06:54
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations using CouchCMS for content management systems—particularly government agencies, educational institutions, and media organizations—face elevated risk. The vulnerability is especially concerning for: (1) Government entities using CouchCMS for public-facing portals under NCA oversight; (2) Educational institutions managing student/faculty content; (3) Media and publishing companies; (4) Corporate intranets in banking and energy sectors. The stored XSS nature means malicious payloads persist and affect all users accessing the compromised content, potentially leading to credential theft, session hijacking, or malware distribution across organizational networks.
🏢 Affected Saudi Sectors
Government and Public Administration
Education
Media and Publishing
Corporate Communications
Healthcare (if using CouchCMS for patient portals)
Energy Sector (internal communications)
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Audit all CouchCMS 2.2.1 installations in your environment and document their criticality
2. Restrict file upload permissions to trusted administrators only; disable SVG upload if not required
3. Implement strict input validation on the browse.php endpoint to reject SVG files with embedded script tags
4. Review uploaded files for malicious content; delete any suspicious SVG files
Compensating Controls (until patch available):
5. Deploy Web Application Firewall (WAF) rules to block SVG uploads containing <script>, <iframe>, or event handlers
6. Implement Content Security Policy (CSP) headers to prevent inline script execution
7. Configure file serving with proper MIME types and X-Content-Type-Options: nosniff headers
8. Enable file type validation on server-side (not just client-side)
9. Store uploaded files outside web root or in a separate domain to prevent direct execution
10. Implement strict access controls and audit logging for file upload functionality
Detection Rules:
11. Monitor browse.php for SVG file requests with unusual parameters
12. Alert on SVG files containing script tags, event handlers, or external references
13. Log and review all file uploads by authenticated users
14. Monitor for JavaScript execution from uploaded file directories
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع تثبيتات CouchCMS 2.2.1 في بيئتك وتوثيق أهميتها
2. تقييد أذونات تحميل الملفات للمسؤولين الموثوقين فقط؛ تعطيل تحميل SVG إذا لم تكن مطلوبة
3. تطبيق التحقق الصارم من المدخلات على نقطة نهاية browse.php لرفض ملفات SVG التي تحتوي على علامات script مضمنة
4. مراجعة الملفات المحملة للبحث عن محتوى ضار؛ حذف أي ملفات SVG مريبة
الضوابط التعويضية (حتى توفر التصحيح):
5. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحظر تحميل SVG التي تحتوي على <script> أو <iframe> أو معالجات الأحداث
6. تطبيق رؤوس Content Security Policy (CSP) لمنع تنفيذ البرامج النصية المضمنة
7. تكوين خدمة الملفات بأنواع MIME الصحيحة ورؤوس X-Content-Type-Options: nosniff
8. تفعيل التحقق من نوع الملف على جانب الخادم (وليس فقط على جانب العميل)
9. تخزين الملفات المحملة خارج جذر الويب أو في مجال منفصل لمنع التنفيذ المباشر
10. تطبيق ضوابط الوصول الصارمة وتسجيل التدقيق لوظيفة تحميل الملفات
قواعد الكشف:
11. مراقبة browse.php لطلبات ملفات SVG بمعاملات غير عادية
12. التنبيه على ملفات SVG التي تحتوي على علامات script أو معالجات أحداث أو مراجع خارجية
13. تسجيل ومراجعة جميع تحميلات الملفات من قبل المستخدمين المصرحين
14. مراقبة تنفيذ JavaScript من أدلة الملفات المحملة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.5.2.1 - User access management and authentication
A.5.3.1 - Access control implementation
A.5.4.1 - Cryptography and secure data handling
A.5.5.1 - Monitoring and logging of security events
🔵 SAMA CSF
ID.GV-1 - Organizational context and governance
PR.AC-1 - Access control and authentication
PR.DS-1 - Data security and protection
DE.CM-1 - Detection and monitoring
RS.RP-1 - Response and recovery planning
🟡 ISO 27001:2022
A.5.1.1 - Information security policies
A.5.2.1 - User access management
A.5.3.1 - Access control
A.5.4.1 - Cryptography
A.5.5.1 - Monitoring and logging
A.5.7.1 - Secure development and maintenance