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Vulnerability record · CVE-2026-30575 · published 27 March 2026

CVE-2026-30575: Senior-walter web-based pharmacy product management system improper input validation vulnerability

SSenior Walter · Web Based Pharmacy Product Management System

A Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0 in the add-stock.php file. The application fails to validate the "txtqty" parameter during stock entry, allowing negative values to be processed. This causes the system to decrease the inventory level instead of increasing it, leading to inventory corruption and potential Denial of Service by depleting stock records.

7.5 CVSS 3.1 High EPSS 0.49% · top 60.6% CWE-20 · Improper input validationCWE-1284 · CWE-1284
7.5CVSS 3.1 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

A Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0 in the add-stock.php file. The application fails to validate the "txtqty" parameter during stock entry, allowing negative values to be processed. This causes the system to decrease the inventory level instead of increasing it, leading to inventory corruption and potential Denial of Service by depleting stock records.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/meifukun/Web-Security-PoCs/blob/main/Pharmacy-Product-Management-System/Logic-AddStock-NegativeQty.md ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2025-63712Senior-walter web-based pharmacy product management system cross-site request forgery vulnerabilityCross-Site Request Forgery (CSRF) in SourceCodester Product Expiry Management System. The User Management module (delete-user.php) allows remote atta…EPSS 0.21%8.6CVE-2025-45997Senior-walter web-based pharmacy product management system unrestricted file upload vulnerabilitySourcecodester Web-based Pharmacy Product Management System v.1.0 has a file upload vulnerability. An attacker can upload a PHP file disguised as an …EPSS 0.49%8.1CVE-2025-56274Senior-walter web-based pharmacy product management system improper access control vulnerabilitySourceCodester Web-based Pharmacy Product Management System 1.0 is vulnerable to Incorrect Access Control, which allows low-privileged users to forge…EPSS 0.42%7.5CVE-2026-30573Senior-walter web-based pharmacy product management system vulnerabilityA Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0. The vulnerability is located in the add-sales.php fil…EPSS 0.38%7.5CVE-2026-30576Senior-walter web-based pharmacy product management system improper input validation vulnerabilityA Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0 in the add-stock.php file. The application fails to va…EPSS 0.38%7.5CVE-2026-30574Senior-walter web-based pharmacy product management system vulnerabilityA Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0 in the add-sales.php file. The application fails to ve…EPSS 0.38%6.9CVE-2025-3729Senior-walter web-based pharmacy product management system command injection vulnerabilityA vulnerability, which was classified as critical, has been found in SourceCodester Web-based Pharmacy Product Management System 1.0. This issue affe…EPSS 3.3%6.9CVE-2025-3694Senior-walter web-based pharmacy product management system injection vulnerabilityA vulnerability classified as critical has been found in SourceCodester Web-based Pharmacy Product Management System 1.0. This affects an unknown par…EPSS 0.64%

Source: NIST National Vulnerability Database (record CVE-2026-30575), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.