CVE-2025-70091: Opensourcepos Open Source Point Of Sale

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A cross-site scripting (XSS) vulnerability in the Customers function of OpenSourcePOS v3.4.1 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Phone Number parameter.

Affected products

• Opensourcepos Open Source Point Of Sale: version 3.4.1 only

Published 2026-02-13. Last modified 2026-06-17.