📄 Description (English)
Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Opera Servlet). Supported versions that are affected are 5.6.19.23, 5.6.25.17, 5.6.26.10 and 5.6.27.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Hospitality OPERA 5 accessible data as well as unauthorized update, insert or delete access to some of Oracle Hospitality OPERA 5 accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Hospitality OPERA 5. CVSS 3.1 Base Score 8.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L).
🤖 AI Executive Summary
CVE-2026-21967 is a critical unauthenticated remote vulnerability in Oracle Hospitality OPERA 5 (versions 5.6.19.23, 5.6.25.17, 5.6.26.10, 5.6.27.4) affecting the Opera Servlet component. An unauthenticated attacker can exploit this via HTTP to gain unauthorized access to sensitive guest and operational data, modify records, and cause partial service disruption. With a CVSS score of 8.6 and no authentication required, this poses an immediate threat to hospitality organizations across Saudi Arabia.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 24, 2026 00:39
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability directly impacts Saudi Arabia's hospitality sector, including major hotel chains, resorts, and hospitality management companies operating OPERA 5 systems. High-risk sectors include: (1) Hospitality & Tourism — unauthorized access to guest personal data (passports, payment information, booking details), operational disruption during peak seasons; (2) Government & Hajj/Umrah Services — potential compromise of pilgrim accommodation systems and data; (3) Financial Services — payment processing and billing data exposure; (4) Healthcare Facilities with hospitality components — patient accommodation records. The vulnerability enables data exfiltration of guest PII, financial fraud, and service disruption affecting Saudi Arabia's critical tourism infrastructure.
🏢 Affected Saudi Sectors
Hospitality & Tourism
Hajj & Umrah Services
Government (accommodation management)
Healthcare (patient accommodation)
Financial Services (payment processing)
Travel & Booking Agencies
🎯 MITRE ATT&CK Techniques
T1190 — Exploit Public-Facing Application (unauthenticated HTTP exploitation)
T1110 — Brute Force (authentication bypass)
T1040 — Network Sniffing (HTTP traffic interception)
T1005 — Data from Local System (unauthorized data access)
T1020 — Automated Exfiltration (guest data extraction)
T1531 — Account Access Removal (DoS via data manipulation)
T1499 — Endpoint Denial of Service (partial DoS capability)
⚖️ Saudi Risk Score (AI)
8.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all systems running Oracle Hospitality OPERA 5 versions 5.6.19.23, 5.6.25.17, 5.6.26.10, or 5.6.27.4
2. Implement network segmentation — restrict HTTP access to OPERA 5 systems to authorized networks only
3. Deploy WAF rules to block suspicious HTTP requests to Opera Servlet endpoints
4. Enable comprehensive logging and monitoring of all HTTP traffic to OPERA 5 systems
5. Conduct immediate audit of access logs for unauthorized access attempts
PATCHING GUIDANCE:
1. Apply Oracle Critical Patch Update (CPU) immediately upon availability
2. Test patches in non-production environment first
3. Schedule patching during maintenance windows with minimal guest impact
4. Verify patch application by checking version numbers post-deployment
COMPENSATING CONTROLS (if patching delayed):
1. Implement IP whitelisting for OPERA 5 access
2. Deploy reverse proxy with authentication layer in front of OPERA 5
3. Disable HTTP access, enforce HTTPS with TLS 1.2+ only
4. Implement rate limiting on Opera Servlet endpoints
5. Deploy IDS/IPS signatures for OPERA 5 exploitation attempts
DETECTION RULES:
1. Monitor for HTTP requests to /opera/* endpoints without proper authentication headers
2. Alert on unusual data volume exfiltration from OPERA 5 databases
3. Track failed authentication attempts followed by successful access
4. Monitor for SQL injection patterns in HTTP parameters
5. Alert on modifications to guest records outside normal business hours
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تعمل بإصدارات Oracle Hospitality OPERA 5 المتأثرة (5.6.19.23 و 5.6.25.17 و 5.6.26.10 و 5.6.27.4)
2. تطبيق تقسيم الشبكة — تقييد وصول HTTP إلى أنظمة OPERA 5 للشبكات المصرح بها فقط
3. نشر قواعد جدار الحماية لحجب طلبات HTTP المريبة إلى نقاط نهاية Opera Servlet
4. تفعيل السجلات الشاملة ومراقبة جميع حركة HTTP إلى أنظمة OPERA 5
5. إجراء تدقيق فوري لسجلات الوصول للكشف عن محاولات الوصول غير المصرح
إرشادات التصحيح:
1. تطبيق تحديث Oracle Critical Patch Update (CPU) فوراً عند توفره
2. اختبار التصحيحات في بيئة غير الإنتاج أولاً
3. جدولة التصحيح خلال نوافذ الصيانة بأقل تأثير على الضيوف
4. التحقق من تطبيق التصحيح بفحص أرقام الإصدار بعد النشر
الضوابط البديلة (إذا تأخر التصحيح):
1. تطبيق قائمة بيضاء IP لوصول OPERA 5
2. نشر خادم وكيل عكسي مع طبقة مصادقة أمام OPERA 5
3. تعطيل وصول HTTP، فرض HTTPS مع TLS 1.2 أو أحدث فقط
4. تطبيق تحديد معدل على نقاط نهاية Opera Servlet
5. نشر توقيعات IDS/IPS لمحاولات استغلال OPERA 5
قواعد الكشف:
1. مراقبة طلبات HTTP إلى نقاط نهاية /opera/* بدون رؤوس مصادقة مناسبة
2. تنبيه على حجم بيانات غير عادي يتم تصديره من قواعد بيانات OPERA 5
3. تتبع محاولات المصادقة الفاشلة متبوعة بوصول ناجح
4. مراقبة أنماط حقن SQL في معاملات HTTP
5. تنبيه على تعديلات سجلات الضيوف خارج ساعات العمل العادية
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 — Access Control Policies (unauthenticated access violation)
ECC 2024 A.5.2.1 — User Registration and Access Rights Management
ECC 2024 A.5.3.1 — Password Management (authentication bypass)
ECC 2024 A.6.1.1 — Information Security Policies and Procedures
ECC 2024 A.8.2.1 — Classification of Information (guest PII exposure)
ECC 2024 A.9.1.1 — Business Continuity Management (DoS impact)
🔵 SAMA CSF
SAMA CSF ID.AM-1 — Asset Management (inventory of OPERA 5 systems)
SAMA CSF ID.RA-1 — Risk Assessment (vulnerability identification)
SAMA CSF PR.AC-1 — Access Control (authentication and authorization)
SAMA CSF PR.DS-1 — Data Security (confidentiality of guest data)
SAMA CSF DE.CM-1 — Detection and Analysis (monitoring and logging)
SAMA CSF RS.RP-1 — Response Planning (incident response procedures)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.3 — Segregation of duties
ISO 27001:2022 A.6.1 — Screening (access control)
ISO 27001:2022 A.7.1 — Prior to employment (user access management)
ISO 27001:2022 A.8.1 — User endpoint devices (network access control)
ISO 27001:2022 A.8.2 — Privileged access rights (authentication)
ISO 27001:2022 A.8.3 — Information access restriction (data protection)
ISO 27001:2022 A.12.4 — Logging (audit trails and monitoring)
🟣 PCI DSS v4.0.1
PCI DSS 1.1 — Firewall configuration standards (network segmentation)
PCI DSS 2.1 — Default security parameters (authentication)
PCI DSS 6.2 — Security patches (vulnerability management)
PCI DSS 7.1 — Access control (least privilege)
PCI DSS 10.1 — Audit trails (logging and monitoring)
🔗 References & Sources 1
📦 Affected Products / CPE 4 entries
oracle:hospitality_opera_5:5.6.19.23
oracle:hospitality_opera_5:5.6.25.17
oracle:hospitality_opera_5:5.6.26.10
oracle:hospitality_opera_5:5.6.27.4