CVE-2026-30522
A Business Logic vulnerability exists in SourceCodester Loan Management System v1.0 due to improper server-side validation.
Published Apr 1, 2026 · updated Jun 17, 2026 · oretnom23 loan management system
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 penalty rates for overdue payments. While the frontend interface prevents users from entering negative numbers in the "Monthly Overdue Penalty" field, 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 penalty_rate.
Code
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No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Apr 1, 2026 · NIST NVD
Detected
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 penalty rates for overdue payments. While the frontend interface prevents users from entering negative numbers in the "Monthly Overdue Penalty" field, this constraint is not enforced on the backend. An
Jun 17, 2026 · NIST NVD
Updated
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 penalty rates for overdue payments. While the frontend interface prevents users from entering negative numbers in the "Monthly Overdue Penalty" field, this constraint is not enforced on the backend. An
Affected
- cpe oretnom23/loan management system1.0
Sources
- CVE.orgVulnerability recordCVE-2026-30522
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-30522
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 penalty rates for overdue payments. While the frontend interface prevents users f
nvd.nist.gov