CVE-2026-30575

State: Published
Severity: 7.5 High
Published: Mar 27, 2026
Updated: Mar 27, 2026
Reserved: Mar 4, 2026

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.

Scores

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

Weaknesses

CWE-1284 Improper Validation of Specified Quantity in Input
CWE-20 Improper Input Validation

Affected Products

Product	Versions
n/an/a	n/aAffected

References

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

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