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CVE-2026-45554

Estado: AplazadaMedia (5.3)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (4)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Encode — StarletteAIEncode — UvicornAITiangolo — FastapiAIZauberzeug — NiceguiAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-45554",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45554",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-02T18:03:28.396030Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "zauberzeug",
          "product": "nicegui",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.12.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-06-02T16:16:41.977",
  "references": [
    {
      "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",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-248"
        },
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "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'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."
    },
    {
      "lang": "es",
      "value": "NiceGUI es un framework de UI basado en Python. Antes de la versión 3.12.0, dos rutas de FastAPI que sirven activos estáticos por componente en NiceGUI aceptan un parámetro 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 autenticación, un atacante remoto puede amplificar el volumen de registros y consumir la capacidad de disco y de la tubería de registros en cualquier servidor NiceGUI accesible públicamente. Este problema ha sido parcheado en la versión 3.12.0."
    }
  ],
  "lastModified": "2026-07-22T19:10:00.120",
  "sourceIdentifier": "security-advisories@github.com"
}