CVE-2026-5812Public exploitNetwork attack vector

Authenticated inventory inflation via negative sale quantity

Published Apr 8, 2026 · Updated Apr 8, 2026

Business logic error in SourceCodester Web-based Pharmacy Product Management System 1.0 allows remote authenticated users to inflate stock. The add-sales.php POST handler accepts a negative txtqty value and subtracts it from current stock, turning the sale deduction into an addition. A logged-in pharmacist or administrator can corrupt inventory and related sales records; the published evidence shows no confidentiality impact.

CVSS severity5.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Business logic error in SourceCodester Web-based Pharmacy Product Management System 1.0 allows remote authenticated users to inflate stock. The add-sales.php POST handler accepts a negative txtqty value and subtracts it from current stock, turning the sale deduction into an addition. A logged-in pharmacist or administrator can corrupt inventory and related sales records; the published evidence shows no confidentiality impact.

The record

CVE
CVE-2026-5812
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
Online Computer and Laptop Store Project
Product
Web-based Pharmacy Product Management System
Classifications
CWE-840, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Online Computer and Laptop Store Project · Web-based Pharmacy Product Management Systemversion=1.0

Published CVSS scores

5.5VulDBAV:N/AC:L/Au:S/C:N/I:P/A:P
5.4VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-840Business Logic Errors
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo