NiceGUI is vulnerable to Reflected XSS attack_CVE-2025-53354

6.1 / 10

MEDIUM

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

Description

NiceGUI is a Python-based UI framework. Versions 2.24.2 and below are at risk for Cross-Site Scripting (XSS) when developers render unescaped user input into the DOM using ui.html(). NiceGUI did not enforce HTML or JavaScript sanitization, so applications that directly combine components like ui.input() with ui.html() or ui.chat_message with HTML content without escaping may allow attackers to execute arbitrary JavaScript in the user’s browser. Applications that do not pass untrusted input into ui.html() are not affected. This issue is fixed in version 3.0.0.

Basic Information

ID CVE-2025-53354

Source GitHub_M

Published Oct 3, 2025 at 19:32

Modified Oct 3, 2025 at 19:42

Affected Product

Vendor zauberzeug

Product nicegui

Version < 3.0.0

Affected Versions zauberzeug nicegui < 3.0.0

CWE Classification

CWE-79

References

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    "published": "2025-10-03T19:32:21.521Z",
    "modified": "2025-10-03T19:42:40.273Z",
    "type": "cve",
    "title": "NiceGUI is vulnerable to Reflected XSS attack",
    "source": "GitHub_M",
    "references": "https://github.com/zauberzeug/nicegui/security/advisories/GHSA-8c95-hpq2-w46f\nhttps://github.com/zauberzeug/nicegui/commit/4673dc35c94a0c7339e2164378b0977332e60775",
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