CVEvulnerability

CVE-2026-30521

6.5 MEDIUM Published 2026-03-31 Modified 2026-07-24 Official page ↗
Status
Modified
Published
2026-03-31
Last modified
2026-07-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-602

Description

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.

Affected configurations

• oretnom23 loan management system 1.0

Related

Weakness · CWE (1)

  • CWE-602 Client-Side Enforcement of Server-Side Security weakness

References