CVE-2026-0483
Unknown
Unknown - Not Provided
Stored XSS in Live Helper Chat PDF Upload Enables Code Execution
Vulnerability report for CVE-2026-0483, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-01-28
Last updated on: 2026-01-28
Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)
Description
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 Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| live_helper_chat | live_helper_chat | to 4.72 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
