📧 info@ciso.sa | 📱 +966550939344 | Riyadh, Kingdom of Saudi Arabia
🔧 Scheduled Maintenance — Saturday 2:00-4:00 AM AST. Some features may be temporarily unavailable.    ●   
💎
Pro Plan 50% Off Unlock all AI features, unlimited reports, and priority support. Upgrade
Search Center
ESC to close
Global data_breach Software/SaaS CRITICAL 1h Global vulnerability Technology / Web Services HIGH 3h Global vulnerability Consumer Electronics / Technology CRITICAL 5h Global ransomware Enterprise / All Sectors CRITICAL 5h Global data_breach Government CRITICAL 7h Global malware Multiple sectors / General public HIGH 7h Global vulnerability Technology and Software Development CRITICAL 8h Global malware,vulnerability,apt Technology, Cloud Services, Consumer Electronics HIGH 8h Global malware Web Hosting and Content Management HIGH 8h Global vulnerability Information Technology and Network Infrastructure CRITICAL 9h Global data_breach Software/SaaS CRITICAL 1h Global vulnerability Technology / Web Services HIGH 3h Global vulnerability Consumer Electronics / Technology CRITICAL 5h Global ransomware Enterprise / All Sectors CRITICAL 5h Global data_breach Government CRITICAL 7h Global malware Multiple sectors / General public HIGH 7h Global vulnerability Technology and Software Development CRITICAL 8h Global malware,vulnerability,apt Technology, Cloud Services, Consumer Electronics HIGH 8h Global malware Web Hosting and Content Management HIGH 8h Global vulnerability Information Technology and Network Infrastructure CRITICAL 9h Global data_breach Software/SaaS CRITICAL 1h Global vulnerability Technology / Web Services HIGH 3h Global vulnerability Consumer Electronics / Technology CRITICAL 5h Global ransomware Enterprise / All Sectors CRITICAL 5h Global data_breach Government CRITICAL 7h Global malware Multiple sectors / General public HIGH 7h Global vulnerability Technology and Software Development CRITICAL 8h Global malware,vulnerability,apt Technology, Cloud Services, Consumer Electronics HIGH 8h Global malware Web Hosting and Content Management HIGH 8h Global vulnerability Information Technology and Network Infrastructure CRITICAL 9h
Vulnerabilities

CVE-2026-30521

Medium ⚡ Exploit Available
A Business Logic vulnerability exists in SourceCodester Loan Management System v1.0 due to improper server-side validation. The application allows administrators to create "Loan Plans" with specific i
CWE-602 — Weakness Type
Published: Mar 31, 2026  ·  Modified: Apr 3, 2026  ·  Source: NVD
CVSS v3
6.5
🔗 NVD Official
📄 Description (English)

A Business Logic vulnerability exists in SourceCodester Loan Management System v1.0 due to improper server-side validation. The application allows administrators to create "Loan Plans" with specific interest rates. While the frontend interface prevents users from entering negative numbers, this constraint is not enforced on the backend. An authenticated attacker can bypass the client-side restriction by manipulating the HTTP POST request to submit a negative value for the interest_percentage. This results in the creation of loan plans with negative interest rates.

🤖 AI Executive Summary

CVE-2026-30521 is a business logic vulnerability in SourceCodester Loan Management System v1.0 that allows authenticated administrators to create loan plans with negative interest rates by bypassing client-side validation through direct HTTP request manipulation. This vulnerability enables financial fraud and system manipulation with no available patch. The medium CVSS score (6.5) underestimates the actual business impact for financial institutions relying on this system.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 12, 2026 22:01
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi financial institutions and microfinance companies using this system. Primary impact sectors: (1) Banking sector — potential for fraudulent loan creation and financial statement manipulation affecting SAMA-regulated institutions; (2) Government lending programs — risk to subsidized loan schemes administered by government entities; (3) Fintech and microfinance companies — exposure of loan portfolio integrity; (4) Corporate finance departments — risk to internal loan management systems. The vulnerability enables creation of negative-interest loans that could be exploited for money laundering, unauthorized profit transfers, or regulatory arbitrage. Impact is amplified in Saudi context where loan documentation is critical for Sharia compliance verification.
🏢 Affected Saudi Sectors
Banking Government Fintech Microfinance Corporate Finance Insurance
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Audit all loan plans created in the past 6 months to identify any with negative or suspicious interest rates
2. Disable the Loan Plan creation functionality until patch is available
3. Restrict access to loan plan creation to only essential personnel with enhanced monitoring
4. Review all administrator accounts for unauthorized access or suspicious activity

BACKEND VALIDATION IMPLEMENTATION:
1. Implement server-side validation requiring interest_percentage >= 0 (minimum 0% for zero-interest loans)
2. Add business logic validation: interest_percentage <= maximum_allowed_rate (e.g., 50%)
3. Implement type checking to ensure interest_percentage is numeric, not string or negative notation
4. Add validation for decimal precision (e.g., max 2 decimal places)

COMPENSATING CONTROLS:
1. Implement request logging for all loan plan creation/modification with IP, timestamp, and user ID
2. Add approval workflow requiring secondary authorization for any loan plan with interest_percentage < 1%
3. Implement automated alerts for negative or zero interest rate loan creation
4. Create database triggers to prevent insertion of negative values in interest_percentage field
5. Implement API rate limiting on loan plan endpoints

DETECTION RULES:
1. Monitor for POST requests to loan plan endpoints with interest_percentage parameter containing negative values or minus signs
2. Alert on any loan plan with interest_percentage < 0 or > 50%
3. Track failed validation attempts followed by successful creation (indicates bypass attempts)
4. Monitor for rapid creation of multiple loan plans with identical or suspicious parameters

VERIFICATION:
1. After implementing fixes, conduct penetration testing specifically targeting interest rate manipulation
2. Test with various negative value formats: -5, (-5), -5.00, negative notation
3. Verify database constraints prevent negative values at storage layer
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع خطط القروض المنشأة في آخر 6 أشهر لتحديد أي منها بأسعار فائدة سالبة أو مريبة
2. تعطيل وظيفة إنشاء خطط القروض حتى يتوفر التصحيح
3. تقييد الوصول إلى إنشاء خطط القروض للموظفين الأساسيين فقط مع مراقبة محسّنة
4. مراجعة جميع حسابات المسؤولين للتحقق من الوصول غير المصرح به أو النشاط المريب

تنفيذ التحقق من جانب الخادم:
1. تنفيذ التحقق من جانب الخادم يتطلب interest_percentage >= 0 (الحد الأدنى 0% للقروض بدون فائدة)
2. إضافة التحقق من منطق الأعمال: interest_percentage <= maximum_allowed_rate (مثل 50%)
3. تنفيذ فحص النوع للتأكد من أن interest_percentage رقمي وليس نص أو تدوين سالب
4. إضافة التحقق من دقة الكسور العشرية (مثل أقصى منزلتين عشريتين)

الضوابط التعويضية:
1. تنفيذ تسجيل الطلبات لجميع عمليات إنشاء/تعديل خطط القروض مع IP والطابع الزمني ومعرف المستخدم
2. إضافة سير عمل الموافقة يتطلب تفويضًا ثانويًا لأي خطة قرض بـ interest_percentage < 1%
3. تنفيذ تنبيهات آلية لإنشاء خطط قروض بأسعار فائدة سالبة أو صفرية
4. إنشاء محفزات قاعدة البيانات لمنع إدراج القيم السالبة في حقل interest_percentage
5. تنفيذ تحديد معدل API على نقاط نهاية خطط القروض

قواعد الكشف:
1. مراقبة طلبات POST إلى نقاط نهاية خطط القروض مع معامل interest_percentage يحتوي على قيم سالبة أو علامات ناقص
2. تنبيه على أي خطة قرض بـ interest_percentage < 0 أو > 50%
3. تتبع محاولات التحقق الفاشلة متبوعة بالإنشاء الناجح (يشير إلى محاولات التجاوز)
4. مراقبة الإنشاء السريع لخطط قروض متعددة بمعاملات متطابقة أو مريبة

التحقق:
1. بعد تنفيذ الإصلاحات، إجراء اختبار الاختراق الموجه نحو التلاعب بسعر الفائدة
2. الاختبار بتنسيقات قيم سالبة مختلفة: -5، (-5)، -5.00، التدوين السالب
3. التحقق من أن قيود قاعدة البيانات تمنع القيم السالبة على مستوى التخزين
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.14.2.1 - Information security requirements for system development and maintenance ECC 2024 A.14.2.5 - Secure development policy and procedures ECC 2024 A.14.2.6 - Change management procedures ECC 2024 A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
Governance & Risk Management - Risk Assessment and Management Information & Cybersecurity - System Development and Maintenance Information & Cybersecurity - Input Data Validation Operational Resilience - Incident Management and Response
🟡 ISO 27001:2022
ISO 27001:2022 A.8.1 - Organizational controls for information security ISO 27001:2022 A.8.2 - Information security policies and procedures ISO 27001:2022 A.8.3 - Organization of information security ISO 27001:2022 A.14.2 - Information security in development and support processes ISO 27001:2022 A.14.2.1 - Secure development policy and procedures
🟣 PCI DSS v4.0.1
PCI DSS 6.5.1 - Injection flaws prevention (applicable to business logic injection) PCI DSS 6.5.10 - Broken authentication and session management PCI DSS 6.2 - Security patches and updates
📦 Affected Products / CPE 1 entries
oretnom23:loan_management_system:1.0
📊 CVSS Score
6.5
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityH — High
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score6.5
CWECWE-602
EPSS0.04%
Exploit ✓ Yes
Patch ✗ No
Published 2026-03-31
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
exploit-available
Share this CVE

💬 Comments

0
Loading comments
📣 Found this valuable?
Share it with your cybersecurity network
in LinkedIn 𝕏 X / Twitter 💬 WhatsApp ✈ Telegram
🍪 Privacy Preferences
CISO Consulting — Compliant with Saudi Personal Data Protection Law (PDPL)
We use cookies and similar technologies to provide the best experience on our platform. You can choose which types you accept.
🔒
Essential Always On
Required for the website to function properly. Cannot be disabled.
📋 Sessions, CSRF tokens, authentication, language preferences
📊
Analytics
Help us understand how visitors use the site and improve performance.
📋 Page views, session duration, traffic sources, performance metrics
⚙️
Functional
Enable enhanced features like content personalization and preferences.
📋 Dark/light theme, font size, custom dashboards, saved filters
📣
Marketing
Used to deliver content and ads relevant to your interests.
📋 Campaign tracking, retargeting, social media analytics
Privacy Policy →
CISO AI Assistant
Ask anything · Documents · Support
🔐

Introduce Yourself

Enter your details to access the full assistant

Your info is private and never shared
💬
CyberAssist
Online · responds in seconds
5 / 5
🔐 Verify Your Identity

Enter your email to receive a verification code before submitting a support request.

Enter to send · / for commands 0 / 2000
CISO AI · Powered by Anthropic Claude
✦ Quick Survey Help Us Improve CISO Consulting Your feedback shapes the future of our platform — takes less than 2 minutes.
⚠ Please answer this question to continue

How would you rate your overall experience with our platform?

Rate from 1 (poor) to 5 (excellent)

🎉
Thank you!
Your response has been recorded.