CVE-2026-30522 - Vulnerability Analysis

Overview

SourceCodester Loan Management System v1.0 contains a business logic vulnerability caused by improper server-side validation of the "Monthly Overdue Penalty" field, letting authenticated attackers submit negative penalty rates by manipulating HTTP POST requests.

Severity & Score

Impact

Authenticated attackers can manipulate penalty rates, potentially disrupting loan calculations and financial data integrity.

Mitigation

Update to the latest version with proper server-side validation for penalty rates.

References

• https://github.com/meifukun/Web-Security-PoCs/blob/main/Loan-Management-System/BusinessLogic-LoanPlan-NegativePenalty.md

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner