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.
| Package | Affected versions | Patched versions |
|---|---|---|
niceguiPyPI | < 3.4.0 | 3.4.0 |
Affected products
2- Range: < 3.4.0
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-2m4f-cg75-76w2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66470ghsaADVISORY
- github.com/zauberzeug/nicegui/commit/58ad0b36e19922de16bbc79ea3ddd29851b1a3e3ghsax_refsource_MISCWEB
- github.com/zauberzeug/nicegui/security/advisories/GHSA-2m4f-cg75-76w2ghsax_refsource_CONFIRMWEB
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