| Titel | Privoce vocechat <=0.9.121 Improper Neutralization of Alternate XSS Syntax |
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| Beschreibung | The welcome query parameter on the widget.html page is not sanitized or encoded before being written directly into a dangerous DOM sink (e.g., innerHTML) by client-side JavaScript, resulting in a DOM-based Cross-Site Scripting (XSS) vulnerability. An attacker can craft a malicious link that, when clicked by a victim, executes arbitrary JavaScript in the victim's browser session. This can be used to exfiltrate sensitive client-side data such as localStorage, sessionStorage, or accessible cookies, as well as to perform session hijacking, phishing, or malicious redirects.
Proof of Concept: http://localhost:3001/widget.html?welcome=<img src=x onerror="alert(JSON.stringify(localStorage))">
Trigger condition: Victim visits a link containing the malicious welcome parameter.
Root cause: User-controllable input from the URL is not HTML-escaped or sanitized before being inserted into a DOM-rendering sink on the client side. |
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| Quelle | ⚠️ https://github.com/H1ck1y/Vulnerabilities/blob/main/Vocechat_DomXss.md |
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| Benutzer | dyihan (UID 101533) |
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| Einreichung | 22.09.2026 15:21 (vor 1 Monat) |
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| Moderieren | 24.10.2026 16:00 (1 month later) |
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| Status | Akzeptiert |
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| VulDB Eintrag | 426123 [Privoce Vocechat bis 0.9.121 Query Parameter widget.html welcome Cross Site Scripting] |
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| Punkte | 20 |
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