CVE-2026-116047
Received Received - Intake

Stored XSS in Privoce Vocechat Widget

Publication date: 2026-10-25

Last updated on: 2026-10-25

Assigner: VulDB

Description
A vulnerability has been found in Privoce Vocechat up to 0.9.121. This issue affects some unknown processing of the file widget.html of the component Query Parameter Handler. Such manipulation of the argument welcome leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-25
Last Modified
2026-10-25
Generated
2026-10-25
AI Q&A
2026-10-25
EPSS Evaluated
N/A
NVD
CVE-2026-116047
EUVD
EUVD-2026-109371

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Privoce Vocechat 0.9.121

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a DOM-based Cross-Site Scripting (XSS) vulnerability in Privoce Vocechat versions up to 0.9.121. It occurs because the application improperly handles the 'welcome' URL parameter in the widget.html file. Attackers can inject malicious JavaScript by crafting a link with a specially crafted 'welcome' parameter. When a user clicks the link, the script executes in their browser, potentially stealing sensitive data like session tokens.

Detection Guidance

To detect this vulnerability, inspect web traffic for requests containing the 'welcome' parameter in URLs pointing to widget.html. Check if the parameter value is reflected unsanitized in the DOM. Use browser developer tools to monitor DOM changes when the parameter is present.

Impact Analysis

This vulnerability allows attackers to execute arbitrary JavaScript in your browser if you click a malicious link. They can steal your session tokens (VOCECHAT_TOKEN, VOCECHAT_CURR_UID) from localStorage, leading to full account takeover. Attackers could also perform unauthorized actions on your behalf, steal sensitive data, or launch phishing attacks.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR's data protection principles and HIPAA's security requirements. It may result in data breaches, unauthorized disclosure of sensitive information, and failure to maintain confidentiality and integrity of user data.

Mitigation Strategies

Update VoceChat to the latest version beyond 0.9.121. If unavailable, implement input sanitization for the 'welcome' parameter, avoid using innerHTML for user-controlled data, and enforce strict Content Security Policy (CSP). Remove sensitive tokens from localStorage and use HttpOnly cookies instead.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-116047. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart