CVE-2026-21871

Katalog CVE

CVSS 6.1 · Medium EPSS 0,27%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada zauberzeug nicegui. Skor CVSS 3.1 6.1 (Medium) menurut github.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

8 Januari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.1 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

0,27% peluang dieksploitasi; lebih tinggi dari 18,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/zauberzeug/nicegui/security/advisories/GHSA-7grm-h62g-5m97 exploit · advisory vendor
• https://github.com/zauberzeug/nicegui/releases/tag/v3.5.0 release notes