Vulnerability · Published Jan 28, 2026 · Assigned by INCIBE
CVE-2026-0483Stored Cross-Site Scripting (XSS) vulnerability in LiveHelperChat
Medium 6.9
In plain English
A medium-severity cross-site scripting in LiveHelperChat from LiveHelperChat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| LiveHelperChat | LiveHelperChat | 0 – before 4.72 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N