📄 Description (English)
In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.
🤖 AI Executive Summary
CVE-2026-20239 is a high-severity information disclosure vulnerability in Splunk Enterprise and Cloud Platform that allows authenticated users with _internal index access to view sensitive session cookies and response bodies. This privilege escalation risk affects organizations using vulnerable Splunk versions and poses significant data exposure threats. Immediate access control review and version upgrades are critical for Saudi organizations relying on Splunk for security monitoring and log analysis.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 22, 2026 00:24
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi financial institutions (SAMA-regulated banks), government agencies (NCA oversight), healthcare organizations (MOH systems), energy sector (ARAMCO, SEC), and telecommunications providers (STC, Mobily). Organizations using Splunk for SIEM, log aggregation, and security monitoring face exposure of authentication tokens, API keys, and sensitive customer data. The _internal index access by privileged users could lead to lateral movement, unauthorized access to monitored systems, and compliance violations under NCA ECC 2024 and SAMA CSF frameworks.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Services
Energy and Utilities
Telecommunications
Insurance
Critical Infrastructure
🎯 MITRE ATT&CK Techniques
T1087 - Account Discovery
T1110 - Brute Force
T1555 - Credentials from Password Stores
T1187 - Forced Authentication
T1056 - Input Capture
T1040 - Network Sniffing
T1528 - Steal Application Access Token
T1539 - Steal Web Session Cookie
T1526 - Cloud Service Discovery
T1526.001 - Cloud Service Discovery: Find Accounts and Buckets
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Splunk Enterprise instances running versions below 10.2.2 and 10.0.5, and Cloud Platform instances below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13
2. Audit all users with _internal index access permissions and document business justification
3. Implement role-based access control (RBAC) restrictions to limit _internal index access to only essential administrators
4. Review audit logs for unauthorized _internal index queries in the past 90 days
PATCHING GUIDANCE:
1. Upgrade Splunk Enterprise to version 10.2.2 or 10.0.5 or later
2. Upgrade Splunk Cloud Platform to version 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, or 10.0.2503.13 or later
3. Test patches in non-production environments before deployment
4. Schedule maintenance windows for production upgrades
COMPENSATING CONTROLS (if patching delayed):
1. Restrict _internal index access to only dedicated SOC/admin accounts with MFA enabled
2. Implement Splunk access controls: disable _internal index access for non-essential roles
3. Monitor _internal index queries using Splunk audit logs and alert on suspicious access patterns
4. Implement network segmentation to limit Splunk access to authorized personnel only
5. Enable session timeout policies to minimize exposure window
DETECTION RULES:
1. Alert on any user accessing _internal index who is not in approved admin list
2. Monitor for queries containing 'session', 'cookie', 'token', 'password' in _internal index
3. Track failed authentication attempts followed by _internal index access
4. Log all role modifications that grant _internal index permissions
5. Create baseline of normal _internal index access patterns and alert on deviations
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع مثيلات Splunk Enterprise التي تعمل بإصدارات أقل من 10.2.2 و 10.0.5، ومثيلات Cloud Platform أقل من 10.3.2512.8 و 10.2.2510.11 و 10.1.2507.21 و 10.0.2503.13
2. تدقيق جميع المستخدمين الذين لديهم أذونات الوصول إلى فهرس _internal وتوثيق المبرر التجاري
3. تطبيق قيود التحكم في الوصول القائمة على الأدوار (RBAC) لتحديد الوصول إلى فهرس _internal للمسؤولين الأساسيين فقط
4. مراجعة سجلات التدقيق للاستعلامات غير المصرح بها لفهرس _internal في آخر 90 يوماً
إرشادات التصحيح:
1. ترقية Splunk Enterprise إلى الإصدار 10.2.2 أو 10.0.5 أو أحدث
2. ترقية Splunk Cloud Platform إلى الإصدار 10.3.2512.8 أو 10.2.2510.11 أو 10.1.2507.21 أو 10.0.2503.13 أو أحدث
3. اختبار التصحيحات في بيئات غير الإنتاج قبل النشر
4. جدولة نوافذ الصيانة لترقيات الإنتاج
الضوابط البديلة (إذا تأخر التصحيح):
1. تقييد الوصول إلى فهرس _internal لحسابات المسؤولين المخصصة فقط مع تفعيل المصادقة متعددة العوامل
2. تطبيق عناصر التحكم في الوصول إلى Splunk: تعطيل الوصول إلى فهرس _internal للأدوار غير الأساسية
3. مراقبة استعلامات فهرس _internal باستخدام سجلات التدقيق وتنبيهات الوصول المريب
4. تطبيق تقسيم الشبكة لتحديد الوصول إلى Splunk للموظفين المصرح لهم فقط
5. تفعيل سياسات انتهاء الجلسة لتقليل نافذة التعرض
قواعد الكشف:
1. تنبيه عند وصول أي مستخدم إلى فهرس _internal ليس في قائمة المسؤولين المعتمدة
2. مراقبة الاستعلامات التي تحتوي على 'session' أو 'cookie' أو 'token' أو 'password' في فهرس _internal
3. تتبع محاولات المصادقة الفاشلة متبوعة بالوصول إلى فهرس _internal
4. تسجيل جميع تعديلات الأدوار التي تمنح أذونات الوصول إلى فهرس _internal
5. إنشاء خط أساس لأنماط الوصول العادية إلى فهرس _internal والتنبيه عند الانحرافات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information Security Policies and Procedures
A.6.1.1 - Internal Organization
A.6.2.1 - Access Control
A.7.1.1 - Physical and Environmental Security
A.8.1.1 - Cryptography
A.9.1.1 - Communications and Operations Management
A.10.1.1 - Access Control
A.12.4.1 - Logging and Monitoring
🔵 SAMA CSF
Governance and Risk Management - Information Security Governance
Governance and Risk Management - Risk Assessment and Management
Protection and Resilience - Access Control and Authentication
Protection and Resilience - Data Protection and Privacy
Detection and Response - Security Monitoring and Logging
Detection and Response - Incident Management
🟡 ISO 27001:2022
5.1 - Policies for information security
5.3 - Segregation of duties
6.1 - Screening
6.2 - Terms and conditions of employment
8.1 - User endpoint devices
8.2 - Privileged access rights
8.3 - Information access restriction
8.4 - Access to cryptographic keys
8.5 - Physical and logical access
8.6 - Secret authentication information
8.7 - Access control
9.2 - User access management
9.4 - Access rights review
10.1 - Information security event logging
10.2 - Protection of logging information
🟣 PCI DSS v4.0.1
Requirement 2 - Do not use vendor-supplied defaults
Requirement 6 - Develop and maintain secure systems
Requirement 7 - Restrict access to data by business need-to-know
Requirement 8 - Identify and authenticate access to system components
Requirement 10 - Track and monitor all access to network resources
🔗 References & Sources 1
📦 Affected Products / CPE 6 entries
splunk:splunk
splunk:splunk
splunk:splunk_cloud_platform
splunk:splunk_cloud_platform
splunk:splunk_cloud_platform
splunk:splunk_cloud_platform