CVE-2026-33730: Opensourcepos Open Source Point Of Sale

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Open Source Point of Sale (opensourcepos) is a web based point of sale application written in PHP using CodeIgniter framework. Prior to version 3.4.2, an Insecure Direct Object Reference (IDOR) vulnerability allows an authenticated low-privileged user to access the password change functionality of other users, including administrators, by manipulating the `employee_id` parameter. The application does not verify object ownership or enforce authorization checks. Version 3.4.2 adds object-level authorization checks to validate that the current user owns the employee_id being accessed.

Affected products

• Opensourcepos Open Source Point Of Sale: before 3.4.2 (fixed in 3.4.2)

Published 2026-03-27. Last modified 2026-06-17.