CVE-2025-51397: Livehelperchat Live Helper Chat

Medium severity, CVSS 5.4. EPSS: 0.9% chance of exploitation in the next 30 days.

A stored cross-site scripting (XSS) vulnerability in the Facebook Chat module of Live Helper Chat v4.60 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Surname parameter under the Recipient' Lists.

Affected products

• Livehelperchat Live Helper Chat: up to and including 4.61

Published 2025-07-21. Last modified 2026-06-17.