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Vulnerabilities

CVE-2026-6594

High
CWE-94 — Weakness Type
Published: Apr 20, 2026  ·  Modified: Apr 27, 2026  ·  Source: NVD
CVSS v3
7.3
🔗 NVD Official
📄 Description (English)

A vulnerability was determined in brikcss merge up to 1.3.0. This affects an unknown part. Executing a manipulation of the argument __proto__/constructor.prototype/prototype can lead to improperly controlled modification of object prototype attributes. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.

🤖 AI Executive Summary

CVE-2026-6594 is a prototype pollution vulnerability in brikcss merge library (≤1.3.0) that allows remote attackers to manipulate object prototypes through __proto__/constructor.prototype exploitation. With a CVSS score of 7.3 and no available patch, this poses a significant risk to applications using vulnerable versions. The lack of vendor response indicates prolonged exposure risk for dependent systems.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 6, 2026 11:45
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi technology and software development sectors, including fintech companies, government digital transformation initiatives, and telecommunications providers that may use brikcss in web applications or development pipelines. Banking sector (SAMA-regulated) faces risk if brikcss is embedded in customer-facing applications or internal tools. Government agencies (NCA oversight) using open-source dependencies in critical systems are at elevated risk. Telecom operators (STC, Mobily) and e-commerce platforms are vulnerable if brikcss is part of their development stack.
🏢 Affected Saudi Sectors
Banking and Financial Services (SAMA-regulated) Government and Public Administration (NCA oversight) Telecommunications (STC, Mobily, Zain) E-commerce and Retail Healthcare and Pharmaceutical Energy and Utilities Software Development and IT Services
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Audit all applications and dependencies for brikcss usage (check package.json, npm audit, and dependency trees)
2. Identify systems running brikcss versions ≤1.3.0
3. Implement input validation and sanitization for all user-supplied data
4. Deploy Web Application Firewalls (WAF) with rules blocking __proto__, constructor.prototype, and prototype pollution patterns

Patching Guidance:
1. Upgrade brikcss to version >1.3.0 if available from alternative sources or forks
2. If upgrade unavailable, consider replacing brikcss with maintained alternatives (e.g., lodash.merge with Object.freeze protections)
3. Implement object property freezing: Object.freeze(Object.prototype) in application initialization (with caution)

Compensating Controls:
1. Use Content Security Policy (CSP) headers to restrict script execution
2. Implement strict input validation using allowlists for merge operations
3. Monitor for suspicious prototype manipulation attempts in application logs
4. Use Node.js --disable-proto flag if running on Node.js

Detection Rules:
1. Monitor for HTTP requests containing __proto__, constructor, or prototype in parameters
2. Alert on unexpected changes to Object.prototype properties
3. Log all merge/object manipulation operations with source tracking
4. Implement SIEM rules: regex pattern matching for (\.__proto__|constructor\.prototype|prototype\s*=)
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع التطبيقات والمكتبات للتحقق من استخدام brikcss (تحقق من package.json و npm audit)
2. تحديد الأنظمة التي تشغل إصدارات brikcss ≤1.3.0
3. تطبيق التحقق من صحة المدخلات وتنظيفها لجميع البيانات المدخلة من المستخدم
4. نشر جدران حماية تطبيقات الويب (WAF) برقابة على __proto__ و constructor.prototype

إرشادات التصحيح:
1. ترقية brikcss إلى إصدار >1.3.0 إن توفر
2. إذا لم يتوفر التحديث، استبدل brikcss بمكتبات بديلة مدعومة
3. تطبيق تجميد خصائص الكائنات: Object.freeze(Object.prototype)

الضوابط البديلة:
1. استخدام رؤوس سياسة أمان المحتوى (CSP)
2. تطبيق التحقق الصارم من المدخلات باستخدام قوائم السماح
3. مراقبة محاولات معالجة النموذج الأولي المريبة
4. استخدام علم Node.js --disable-proto

قواعد الكشف:
1. مراقبة طلبات HTTP التي تحتوي على __proto__ أو constructor أو prototype
2. تنبيهات على التغييرات غير المتوقعة في خصائص Object.prototype
3. تسجيل جميع عمليات الدمج مع تتبع المصدر
4. قواعس SIEM: (\.__proto__|constructor\.prototype|prototype\s*=)
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.14.2.1 - Secure development policy and procedures ECC 2024 A.14.2.5 - Secure development environment ECC 2024 A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.BE-1 - Asset management and inventory SAMA CSF PR.DS-6 - Data security and integrity SAMA CSF DE.CM-1 - Detection and analysis
🟡 ISO 27001:2022
ISO 27001:2022 A.8.1 - Organizational controls for information security ISO 27001:2022 A.14.2.1 - Secure development policy ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates PCI DSS 6.5.1 - Injection flaws prevention
📊 CVSS Score
7.3
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityL — Low / Local
IntegrityL — Low / Local
AvailabilityL — Low / Local
📋 Quick Facts
Severity High
CVSS Score7.3
CWECWE-94
EPSS0.04%
Exploit No
Patch ✗ No
Published 2026-04-20
Source Feed nvd
Views 2
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-94
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