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CVE-2026-0483

Medium

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.

SeverityMedium
CVSS6.9
Exploit probability—
ProductLiveHelperChat
PublishedJan 28, 2026
First seenJan 28, 2026
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update
  • LiveHelperChat LiveHelperChat4.72 or later

Affected products

ProductAffected versionsFixed in
LiveHelperChat LiveHelperChatv < 4.724.72

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