📄 Description (English)
UltraDAG is a minimal DAG-BFT blockchain in Rust. In version 0.1, a non-council attacker can submit a signed SmartOp::Vote transaction that passes signature, nonce, and balance prechecks, but fails authorization only after state mutation has already occurred.
🤖 AI Executive Summary
UltraDAG v0.1 contains a critical authorization bypass vulnerability (CVE-2026-40583) where non-council attackers can submit fraudulent SmartOp::Vote transactions that pass initial validation checks but fail authorization after state mutations occur. This allows attackers to manipulate blockchain state and voting mechanisms without proper permissions. The vulnerability affects blockchain infrastructure with CVSS 8.2 and has publicly available exploits, requiring immediate patching for any Saudi organizations utilizing this technology.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 27, 2026 19:25
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi financial institutions and government entities exploring blockchain technology for digital transformation initiatives. SAMA-regulated banks and fintech companies implementing UltraDAG for settlement or voting mechanisms face critical risks of unauthorized state manipulation and transaction fraud. Government agencies (NCA, CITC) utilizing blockchain for identity management or regulatory systems could experience compromised voting integrity and unauthorized access. Energy sector applications (ARAMCO blockchain initiatives) and telecom operators (STC) implementing distributed ledger technology are at risk of operational disruption and data integrity violations. The vulnerability is particularly dangerous in consortium blockchain scenarios common in Saudi Arabia's Vision 2030 digital initiatives.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Services
Energy and Utilities
Telecommunications
Digital Identity and Authentication
Supply Chain and Logistics
Real Estate and Property Management
🎯 MITRE ATT&CK Techniques
T1548 - Abuse Elevation Control Mechanism (authorization bypass)
T1556 - Modify Authentication Process (vote transaction manipulation)
T1565 - Data Manipulation (state mutation)
T1578 - Modify Cloud Compute Infrastructure (blockchain state modification)
T1562 - Impair Defenses (bypassing authorization checks)
T1070 - Indicator Removal (transaction log manipulation potential)
⚖️ Saudi Risk Score (AI)
8.7
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all systems running UltraDAG v0.1.0 across your organization
2. Isolate affected blockchain nodes from production networks immediately
3. Disable SmartOp::Vote transaction processing until patching is complete
4. Review blockchain transaction logs for suspicious vote transactions from non-council addresses
PATCHING GUIDANCE:
1. Apply available patch to upgrade from v0.1.0 to patched version immediately
2. Verify patch integrity using official UltraDAG release signatures
3. Test patch in isolated environment before production deployment
4. Implement staged rollout with monitoring for transaction anomalies
COMPENSATING CONTROLS (if patch unavailable):
1. Implement strict network segmentation isolating UltraDAG nodes
2. Deploy transaction validation middleware that re-validates authorization before state commitment
3. Enable comprehensive audit logging of all SmartOp::Vote transactions
4. Implement manual approval workflow for council voting operations
DETECTION RULES:
1. Alert on SmartOp::Vote transactions from non-council addresses
2. Monitor for authorization failures occurring after state mutations
3. Track nonce anomalies and signature validation patterns
4. Flag transactions with balance prechecks passing but authorization failing
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تعمل بـ UltraDAG v0.1.0 عبر مؤسستك
2. عزل عقد البلوكتشين المتأثرة عن شبكات الإنتاج فورًا
3. تعطيل معالجة معاملات SmartOp::Vote حتى اكتمال التصحيح
4. مراجعة سجلات معاملات البلوكتشين للبحث عن معاملات تصويت مريبة من عناوين غير المجلس
إرشادات التصحيح:
1. تطبيق التصحيح المتاح للترقية من v0.1.0 إلى الإصدار المصحح فورًا
2. التحقق من سلامة التصحيح باستخدام توقيعات الإصدار الرسمية لـ UltraDAG
3. اختبار التصحيح في بيئة معزولة قبل نشر الإنتاج
4. تنفيذ طرح مرحلي مع المراقبة لشذوذ المعاملات
الضوابط التعويضية (إذا لم يكن التصحيح متاحًا):
1. تنفيذ تقسيم شبكة صارم يعزل عقد UltraDAG
2. نشر برنامج وسيط للتحقق من صحة المعاملات يعيد التحقق من التفويض قبل التزام الحالة
3. تفعيل تسجيل التدقيق الشامل لجميع معاملات SmartOp::Vote
4. تنفيذ سير عمل الموافقة اليدوية لعمليات التصويت في المجلس
قواعد الكشف:
1. تنبيه معاملات SmartOp::Vote من عناوين غير المجلس
2. مراقبة فشل التفويض الذي يحدث بعد طفرات الحالة
3. تتبع شذوذ nonce وأنماط التحقق من التوقيع
4. وضع علامة على المعاملات التي تمر بفحوصات الرصيد لكن التفويض يفشل
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies (authorization bypass)
ECC 2024 A.5.2.1 - User Registration and Access Management (non-council access)
ECC 2024 A.8.2.1 - Classification of Information (state mutation integrity)
ECC 2024 A.12.4.1 - Event Logging (transaction audit trails)
ECC 2024 A.14.2.1 - Information Security Requirements in Third-party Agreements (blockchain vendor security)
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Asset Management (blockchain infrastructure inventory)
SAMA CSF PR.AC-1 - Access Control (authorization mechanisms)
SAMA CSF PR.DS-1 - Data Security (state integrity)
SAMA CSF DE.AE-1 - Anomalies and Events (transaction monitoring)
SAMA CSF RC.RP-1 - Recovery Planning (blockchain rollback procedures)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.2 - Information Security Policies (access control policy)
ISO 27001:2022 A.6.2 - Internal Organization (roles and responsibilities)
ISO 27001:2022 A.8.2 - Asset Management (blockchain asset tracking)
ISO 27001:2022 A.9.2 - User Access Management (authorization controls)
ISO 27001:2022 A.12.4 - Logging (audit trail requirements)
🟣 PCI DSS v4.0.1
PCI DSS 3.2.1 - Access Control (authorization enforcement)
PCI DSS 7.1 - Limit Access to System Components (role-based access)
PCI DSS 10.2 - Implement Automated Audit Trails (transaction logging)
PCI DSS 10.3 - Protect Audit Trail History (log integrity)
🔗 References & Sources 4
🔗
https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be
security-advisories@github.com
Patch
🔗
https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511
security-advisories@github.com
Patch
🔗
https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp
security-advisories@github.com
Exploit
Mitigation
Vendor Advisory
🔗
https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp
134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit
Mitigation
Vendor Advisory
📦 Affected Products / CPE 1 entries
ultradag:ultradag:0.1.0