SourceCodester Loan Management System 1.0 POST Request ajax.php save_loan borrower_id sql injection

Summaryinfo

A vulnerability was found in SourceCodester Loan Management System 1.0. It has been rated as critical. Affected by this issue is the function save_loan of the file ajax.php of the component POST Request Handler. This manipulation of the argument borrower_id causes sql injection. This vulnerability is tracked as CVE-2026-30520. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in SourceCodester Loan Management System 1.0 and classified as critical. Affected by this vulnerability is the function save_loan of the file ajax.php of the component POST Request Handler. The manipulation of the argument borrower_id with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-30520 since 03/04/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/01/2026). The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

By approaching the search of inurl:ajax.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• SourceCodester

Name

• Loan Management System

Version

• 1.0

License

• free

Website

• Vendor: https://www.sourcecodester.com/

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Duplicate

• Submit #XXXXXX: Xxxxxxxxxxxxxx Xxxx Xxxxxxxxxx Xxxxxx X.x Xxx Xxxxxxxxx (by github.com)

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