---
id: CVE-2026-30520
title: >-
  A Blind SQL Injection vulnerability exists in SourceCodester Loan Management
  System v1.0
summary: >-
  A Blind SQL Injection vulnerability exists in SourceCodester Loan Management
  System v1.0. The vulnerability is located in the ajax.php file (specifically
  the save_loan action). The application fails to properly sanitize user input
  suppli…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-89
vendor: oretnom23
product: loan_management_system
affected:
  - loan_management_system = 1.0
published: '2026-03-31'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-30520'
references:
  - url: >-
      https://github.com/meifukun/Web-Security-PoCs/blob/main/Loan-Management-System/SQLi-SaveLoan-borrowerId.md
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00258
epssPercentile: 0.15525
ingestedAt: '2026-07-25T21:03:57.724Z'
---

## Overview

A Blind SQL Injection vulnerability exists in SourceCodester Loan Management System v1.0. The vulnerability is located in the ajax.php file (specifically the save_loan action). The application fails to properly sanitize user input supplied to the "borrower_id" parameter in a POST request, allowing an authenticated attacker to inject malicious SQL commands.

## Affected

- `loan_management_system = 1.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.