FKIE_CVE-2026-25732

Vulnerability from fkie_nvd - Published: 2026-02-06 22:16 - Updated: 2026-02-20 15:44
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
NiceGUI is a Python-based UI framework. Prior to 3.7.0, NiceGUI's FileUpload.name property exposes client-supplied filename metadata without sanitization, enabling path traversal when developers use the pattern UPLOAD_DIR / file.name. Malicious filenames containing ../ sequences allow attackers to write files outside intended directories, with potential for remote code execution through application file overwrites in vulnerable deployment patterns. This design creates a prevalent security footgun affecting applications following common community patterns. Note: Exploitation requires application code incorporating file.name into filesystem paths without sanitization. Applications using fixed paths, generated filenames, or explicit sanitization are not affected. This vulnerability is fixed in 3.7.0.
References
security-advisories@github.comhttps://github.com/zauberzeug/nicegui/blob/main/nicegui/elements/upload_files.py#L110-L115Patch
security-advisories@github.comhttps://github.com/zauberzeug/nicegui/blob/main/nicegui/elements/upload_files.py#L79-L82Patch
security-advisories@github.comhttps://github.com/zauberzeug/nicegui/security/advisories/GHSA-9ffm-fxg3-xrhhExploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
zauberzeug nicegui *
To clipboard 

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      "value": "NiceGUI is a Python-based UI framework. Prior to 3.7.0, NiceGUI\u0027s FileUpload.name property exposes client-supplied filename metadata without sanitization, enabling path traversal when developers use the pattern UPLOAD_DIR / file.name. Malicious filenames containing ../ sequences allow attackers to write files outside intended directories, with potential for remote code execution through application file overwrites in vulnerable deployment patterns. This design creates a prevalent security footgun affecting applications following common community patterns. Note: Exploitation requires application code incorporating file.name into filesystem paths without sanitization. Applications using fixed paths, generated filenames, or explicit sanitization are not affected. This vulnerability is fixed in 3.7.0."
    },
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      "lang": "es",
      "value": "NiceGUI es un framework de UI basado en Python. Antes de la versi\u00f3n 3.7.0, la propiedad FileUpload.name de NiceGUI expone metadatos de nombre de archivo proporcionados por el cliente sin sanitizaci\u00f3n, lo que permite el salto de ruta cuando los desarrolladores usan el patr\u00f3n UPLOAD_DIR / file.name. Nombres de archivo maliciosos que contienen secuencias ../ permiten a los atacantes escribir archivos fuera de los directorios previstos, con potencial de ejecuci\u00f3n remota de c\u00f3digo a trav\u00e9s de la sobrescritura de archivos de la aplicaci\u00f3n en patrones de despliegue vulnerables. Este dise\u00f1o crea un riesgo de seguridad autoinducido prevalente que afecta a las aplicaciones que siguen patrones comunes de la comunidad. Nota: La explotaci\u00f3n requiere c\u00f3digo de aplicaci\u00f3n que incorpore file.name en las rutas del sistema de archivos sin sanitizaci\u00f3n. Las aplicaciones que usan rutas fijas, nombres de archivo generados o sanitizaci\u00f3n expl\u00edcita no se ven afectadas. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 3.7.0."
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  "id": "CVE-2026-25732",
  "lastModified": "2026-02-20T15:44:09.747",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
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        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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  "published": "2026-02-06T22:16:11.993",
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      "tags": [
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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