CVE-2026-26746: Opensourcepos Open Source Point Of Sale

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

OpenSourcePOS 3.4.1 contains a Local File Inclusion (LFI) vulnerability in the Sales.php::getInvoice() function. An attacker can read arbitrary files on the web server by manipulating the Invoice Type configuration. This issue can be chained with the file upload functionality to achieve Remote Code Execution (RCE).

Affected products

• Opensourcepos Open Source Point Of Sale: version 3.4.1 only

Published 2026-02-20. Last modified 2026-06-17.