CVE-2026-0483

MEDIUM EPSS 15.4%

Published Jan 28, 20265mo ago · Modified Jun 17, 20261w ago

6.9 CVSS 4.0

Medium

Published Jan 28, 2026 5mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

6.9

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction P

Scope X

Threat Intelligence

EPSS Exploit Probability

15.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 1

incibe.es https://www.incibe.es/en/incibe-cert/notices/aviso/stored-cross-site-scripting-xss-vulnerability-livehelperchat

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.