CVE-2026-5812 Details
Description
A security flaw has been discovered in SourceCodester Pharmacy Product Management System 1.0. This affects an unknown part of the file add-sales.php of the component POST Parameter Handler. Performing a manipulation of the argument txtqty results in business logic errors. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.
A business logic vulnerability has been identified in SourceCodester Pharmacy Product Management System version 1.0. The issue resides in the add-sales.php file, specifically within the POST Parameter Handler component. The vulnerability arises because the application does not properly validate the 'txtqty' parameter, allowing authenticated users to submit negative quantities. This oversight can be exploited to artificially inflate stock levels, as the system's inventory calculations incorrectly add the negative quantity instead of subtracting it. The vulnerability can be exploited remotely, and a public proof-of-concept is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 8, 2026CISA-ADP
Assessed Apr 9, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/meifukun/Web-Security-PoCs/blob/main/Pharmacy-Product-Management-System/Logic-AddSales-NegativeQty.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/submit/787680 | [email protected] | Technical Description |
| https://vuldb.com/vuln/356260 | [email protected] | AdvisoryExploitPartial Content |
| https://vuldb.com/vuln/356260/cti | [email protected] | Content Wall |
| https://www.sourcecodester.com/ | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-840 | Business Logic Errors | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SourceCodester Pharmacy Product Management System | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Apr 8, 2026 | New CVE Received | [email protected] |