CVE-2026-30574

Published Mar 27, 2026

Last updated 19 days ago

CVSS high 7.5
Business logic

Overview

Description
A Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0 in the add-sales.php file. The application fails to verify if the requested sales quantity (txtqty) exceeds the available stock level. An attacker can manipulate the request to purchase a quantity that is significantly higher than the actual available stock.
Source
cve@mitre.org
NVD status
Analyzed
Products
web-based_pharmacy_product_management_system

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.5
Impact score
3.6
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity
HIGH

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-841

Social media

Hype score
Not currently trending

Configurations

Related CVEs

  1. A Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0. The vulnerability is located in the add-sales.php file. The application fails to validate the "txtprice" and "txttotalcost" parameters, allowing attackers to submit negative values for sales transactions. This leads to incorrect financial calculations, corruption of sales reports, and potential financial loss.•CVE-2026-30573
  2. 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.•CVE-2026-30522
  3. 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.•CVE-2026-30521
  4. 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 "txtprice" and "txttotalcost" parameters during stock entry, allowing negative financial values to be submitted. This leads to corruption of financial records, allowing attackers to manipulate inventory asset values and procurement costs.•CVE-2026-30576
  5. 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.•CVE-2026-30575

References

Sources include official advisories and independent security research.