CVE-2025-66469
Medium · 6.1CVSS
6.1
EPSS
0.3%
Published
Dec 8, 2025
CISA due date
—
The record
NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| PyPI | nicegui | 0 | 3.4.0 |
Related vulnerabilities
- GHSA-72qc-wxch-74mg NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection Same vulnerability
- GHSA-78qv-3mpx-9cqq NiceGUI vulnerable to XSS via Code Injection during client-side element function execution Also affects nicegui
- CVE-2026-27156 NiceGUI is a Python-based UI framework. Also affects nicegui
- CVE-2026-25732 NiceGUI is a Python-based UI framework. Also affects nicegui
- CVE-2026-25516 NiceGUI is a Python-based UI framework. Also affects nicegui
- GHSA-9ffm-fxg3-xrhh NiceGUI's Path Traversal via Unsanitized FileUpload.name Enables Arbitrary File Write Also affects nicegui
- GHSA-v82v-c5x8-w282 NiceGUI's XSS vulnerability in ui.markdown() allows arbitrary JavaScript execution… Also affects nicegui
- GHSA-mp55-g7pj-rvm2 NiceGUI has Redis connection leak via tab storage causes service degradation Also affects nicegui