CVE-2026-116047 Details
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.
A DOM-based cross-site scripting vulnerability has been identified in Privoce Vocechat versions through 0.9.121. The issue arises in the file 'widget.html', specifically within the Query Parameter Handler component. The vulnerability allows for the injection of malicious scripts via the 'welcome' query parameter, which are executed in the context of the Vocechat origin. This exploitation can be performed remotely and has been publicly disclosed.
To address this vulnerability, avoid writing user-controlled input into 'innerHTML' or 'document.write'. Instead, use 'textContent' or other safe DOM APIs. If HTML rendering is necessary, sanitize the input with a trusted library like DOMPurify. Additionally, implement a strict Content-Security-Policy to prevent inline script execution and avoid storing session tokens in localStorage, opting for 'HttpOnly' cookies instead.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 25, 2026CISA-ADP
Assessed Oct 29, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/H1ck1y/Vulnerabilities/blob/main/Vocechat_DomXss.md | [email protected] | ExploitRemedyTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-116047 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/994199 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/426123 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/426123/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Privoce Vocechat | <= 0.9.121 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 29, 2026 | CVE Modified | CISA-ADP |
| Oct 25, 2026 | New CVE Received | [email protected] |