What is CVE-2025-53354?

CVE-2025-53354 is a medium-severity vulnerability in Zauberzeug Nicegui, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-10-03.

How severe is CVE-2025-53354?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Zauberzeug Nicegui

CVE-2025-53354

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…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (7.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Zauberzeug Nicegui — versions < 3.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/zauberzeug/nicegui/security/advisories/GHSA-8c95-hpq2-w46f (x_refsource_CONFIRM)
https://github.com/zauberzeug/nicegui/commit/4673dc35c94a0c7339e2164378b0977332e60775 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-53354?: CVE-2025-53354 is a medium-severity vulnerability in Zauberzeug Nicegui, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-10-03.
How severe is CVE-2025-53354?: Medium severity. CVSS v3 base score is 6.1 out of 10.