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Medium · 6.1 Public exploit CVE-2025-66470 EUVD-2025-201813GHSA-2m4f-cg75-76w2PYSEC-2026-1696

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

Published Dec 9, 2025 · Updated Dec 9, 2025 · Assigned by GitHub_M

Vendor: zauberzeug Product: nicegui Package: nicegui Ecosystem: PyPI

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 <foreignObject> 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.

Affected products

VendorProductAffectedFixed
zauberzeug nicegui < 3.4.0 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • Jmehta10/CVE-2025-66470 ★ 2 · Dec 11, 2025

    A fast, simple scanner for detecting CVE-2025-66470 - XSS vulnerability in NiceGUI's ui.interactive_image component.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI nicegui < 3.4.0 3.4.0 GHSA-2m4f-cg75-76w2

References