{"action":"Upgrade nicegui to 3.4.0 or later.","affected":[{"fixed":"3.4.0","introduced":"0"}],"component":"nicegui","cve_ids":["CVE-2025-66469"],"ecosystem":"PyPI","epss":0.00275,"exploited":false,"fixed_versions":["3.4.0"],"ghsa_id":"GHSA-72qc-wxch-74mg","id":"tcs_01M5KF4KP9VK5VA2TWMED31BYN","modified_at":"2026-07-07T17:56:17.014157648Z","published_at":"2025-12-08T21:30:20Z","references":["https://osv.dev/vulnerability/GHSA-72qc-wxch-74mg","https://github.com/zauberzeug/nicegui/security/advisories/GHSA-72qc-wxch-74mg","https://nvd.nist.gov/vuln/detail/CVE-2025-66469","https://github.com/zauberzeug/nicegui/commit/a8fd25b7d5e23afb1952d0f60a1940e18b5f1ca8","https://github.com/zauberzeug/nicegui"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-72qc-wxch-74mg","url":"https://osv.dev/vulnerability/GHSA-72qc-wxch-74mg"}],"summary":"NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection"}