VYPR
Moderate severityNVD Advisory· Published Dec 9, 2025· Updated Dec 9, 2025

NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content

CVE-2025-66470

Description

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 sanitization. This allows attackers to inject malicious HTML or JavaScript via the SVG tag whenever the image component is rendered or updated. This is particularly dangerous for dashboards or multi-user applications displaying user-generated content or annotations. This issue is fixed in version 3.4.0.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
niceguiPyPI
< 3.4.03.4.0

Affected products

2

Patches

Vulnerability mechanics

References

4

News mentions

0

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