Vulnerability details

CVE-2026-30573

CVSS 3.1

7.5High

Official description

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.

CVSS scores

Score	Version	Source	Vector
7.5High	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`

Affected products

Vendor	Product	Versions	Source
No product information recorded.

References and advisories

https://github.com/meifukun/Web-Security-PoCs/blob/main/Pharmacy-Product-Management-System/Logic-AddSales-NegativePrice.md

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Details

Published: 2026-04-01
Last updated: 2026-04-01
State: Published
Assigner (CNA): mitre

Exploit prediction (EPSS)

0.26%

Probability of exploitation in 30 days

17.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Partial

Weaknesses (CWE)

CWE-1284
Improper Validation of Specified Quantity in Input