CVE-2025-66469

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{"affected": [{"affectedData": [{"product": "nicegui", "vendor": "zauberzeug", "versions": [{"status": "affected", "version": "< 3.4.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zauberzeug:nicegui:*:*:*:*:*:*:*:*", "matchCriteriaId": "AD5CC19F-9BBA-4C0D-879C-627478C1E72B", "versionEndExcluding": "3.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "NiceGUI is a Python-based UI framework. Versions 3.3.1 and below are vulnerable to Reflected XSS through its ui.add_css, ui.add_scss, and ui.add_sass functions. The functions lack proper sanitization or encoding for the JavaScript context they generate. An attacker can break out of the intended <style> or <script> tags by injecting closing tags (e.g., </style> or </script>), allowing for the execution of arbitrary JavaScript. This issue is fixed in version 3.4.0."}, {"lang": "es", "value": "NiceGUI es un framework de interfaz de usuario (UI) basado en Python. Las versiones 3.3.1 e inferiores son vulnerables a XSS Reflejado a trav\u00e9s de sus funciones ui.add_css, ui.add_scss y ui.add_sass. Las funciones carecen de una sanitizaci\u00f3n o codificaci\u00f3n adecuada para el contexto de JavaScript que generan. Un atacante puede escapar de las etiquetas <style> o [script_tag] previstas inyectando etiquetas de cierre (por ejemplo, </style> o </script>), lo que permite la ejecuci\u00f3n de JavaScript arbitrario. Este problema se ha solucionado en la versi\u00f3n 3.4.0."}], "id": "CVE-2025-66469", "lastModified": "2026-10-19T19:10:00.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-66469", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-12-09T14:18:04.262651Z", "version": "2.0.3"}}]}, "published": "2025-12-09T00:15:49.330", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/zauberzeug/nicegui/commit/a8fd25b7d5e23afb1952d0f60a1940e18b5f1ca8"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/zauberzeug/nicegui/security/advisories/GHSA-72qc-wxch-74mg"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/zauberzeug/nicegui/security/advisories/GHSA-72qc-wxch-74mg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2025-12-09T10:04:45.115239+00:00", "updated": "2025-12-09T10:04:45.115279+00:00", "vendors": ["nicegui", "nicegui$PRODUCT$nicegui"]}