What is CVE-2025-66470?

CVE-2025-66470 is a medium-severity vulnerability in Zauberzeug Nicegui, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-12-09.

How severe is CVE-2025-66470?

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

Is CVE-2025-66470 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Zauberzeug Nicegui

CVE-2025-66470

NiceGUI is a Python-based UI framework. Versions 3.3.1 and below are subject to a XSS vulnerability through the ui.interactive_image component of NiceGUI. The component renders SVG content using Vue's v-html directive without any sanitizat…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (1.2th 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 < 3.4.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

Jmehta10/CVE-2025-66470

References

https://github.com/zauberzeug/nicegui/security/advisories/GHSA-2m4f-cg75-76w2 (x_refsource_CONFIRM)
https://github.com/zauberzeug/nicegui/commit/58ad0b36e19922de16bbc79ea3ddd29851b1a3e3 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-66470?: CVE-2025-66470 is a medium-severity vulnerability in Zauberzeug Nicegui, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-12-09.
How severe is CVE-2025-66470?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2025-66470 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.