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Medium · 6.9 CVE-2026-0483 EUVD-2026-4895GHSA-g2xg-qw63-fpx3

Stored Cross-Site Scripting (XSS) vulnerability in LiveHelperChat

Published Jan 28, 2026 · Updated Jan 28, 2026 · Assigned by INCIBE

Description

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

VendorProductAffectedFixed
LiveHelperChat LiveHelperChat < 4.72 4.72

References