CVE-2026-0483: Livehelperchat

Medium severity, CVSS 6.9. EPSS: 0.3% chance of exploitation in the next 30 days.

Stored Cross-Site Scripting (XSS) vulnerability in the PDF file upload functionality of Live Helper Chat, versions prior to 4.72. An attacker can upload a malicious PDF file containing an XSS payload, which will be executed in the user's context when they download and open the file via the link generated by the application. The vulnerability allows arbitrary JavaScript code to be executed in the user's local context.

Affected products

• Livehelperchat Livehelperchat: before 4.72 (fixed in 4.72)

Published 2026-01-28. Last modified 2026-06-17.