FKIE_CVE-2026-45554

Vulnerability from fkie_nvd - Published: 2026-06-02 16:16 - Updated: 2026-07-22 19:10
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
NiceGUI is a Python-based UI framework. Prior to version 3.12.0, two FastAPI routes that serve per-component static assets in NiceGUI accept a sub-path parameter that may resolve to a directory rather than a file. Requests that resolve to a directory raise an unhandled RuntimeError inside Starlette's FileResponse, which Uvicorn writes to the server log as a full traceback. Because the routes are reachable without authentication, a remote attacker can amplify log volume and consume disk and log-pipeline capacity on any publicly reachable NiceGUI server. This issue has been patched in version 3.12.0.
References
security-advisories@github.comhttps://github.com/zauberzeug/nicegui/releases/tag/v3.12.0
security-advisories@github.comhttps://github.com/zauberzeug/nicegui/security/advisories/GHSA-pq7c-x8g4-rvp6
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "nicegui",
          "vendor": "zauberzeug",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.12.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "NiceGUI is a Python-based UI framework. Prior to version 3.12.0, two FastAPI routes that serve per-component static assets in NiceGUI accept a sub-path parameter that may resolve to a directory rather than a file. Requests that resolve to a directory raise an unhandled RuntimeError inside Starlette\u0027s FileResponse, which Uvicorn writes to the server log as a full traceback. Because the routes are reachable without authentication, a remote attacker can amplify log volume and consume disk and log-pipeline capacity on any publicly reachable NiceGUI server. This issue has been patched in version 3.12.0."
    },
    {
      "lang": "es",
      "value": "NiceGUI es un framework de UI basado en Python. Antes de la versi\u00f3n 3.12.0, dos rutas de FastAPI que sirven activos est\u00e1ticos por componente en NiceGUI aceptan un par\u00e1metro de subruta que puede resolverse en un directorio en lugar de un archivo. Las solicitudes que se resuelven en un directorio provocan un RuntimeError no manejado dentro de FileResponse de Starlette, que Uvicorn escribe en el registro del servidor como un seguimiento de pila completo. Dado que las rutas son accesibles sin autenticaci\u00f3n, un atacante remoto puede amplificar el volumen de registros y consumir la capacidad de disco y de la tuber\u00eda de registros en cualquier servidor NiceGUI accesible p\u00fablicamente. Este problema ha sido parcheado en la versi\u00f3n 3.12.0."
    }
  ],
  "id": "CVE-2026-45554",
  "lastModified": "2026-07-22T19:10:00.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45554",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-02T18:03:28.396030Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-02T16:16:41.977",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zauberzeug/nicegui/releases/tag/v3.12.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zauberzeug/nicegui/security/advisories/GHSA-pq7c-x8g4-rvp6"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-248"
        },
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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