Description


NiceGUI is a Python-based UI framework. From versions 2.13.0 to 3.4.1, there is a XSS risk in NiceGUI when developers pass attacker-controlled strings into ui.navigate.history.push() or ui.navigate.history.replace(). These helpers are documented as History API wrappers for updating the browser URL without page reload. However, if the URL argument is embedded into generated JavaScript without proper escaping, a crafted payload can break out of the intended string context and execute arbitrary JavaScript in the victim’s browser. Applications that do not pass untrusted input into ui.navigate.history.push/replace are not affected. This issue has been patched in version 3.5.0.

Related CPE's


Weaknesses



CWE-79

CVSS impact metrics


CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

6.1 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-01-08T10:15:55.300Z

1 week ago

Last modified

2026-01-15T17:40:09.563Z

2 hours ago