CVE-2026-50186

{
  "id": "CVE-2026-50186",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-18T22:16:52.783",
  "lastModified": "2026-10-22T17:09:59.477",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "4gaBoards is a boards system for realtime project management. Prior to 3.3.8, 4gaBoards allows an authenticated project manager to supply traversal sequences in the filename parameter of GET /exports/:id/:filename. In server/api/controllers/boards/download.js, the decoded inputs.filename value is passed to path.join() beneath private/exports/<user_id>/ without containment validation. A crafted value such as ../ can select an arbitrary file readable by the server process, and the file is returned to the attacker. The fileStream close handler then passes the same path to fs.unlink(), deleting the selected file and potentially causing data loss or denial of service. This issue is fixed in version 3.3.8."
    },
    {
      "lang": "es",
      "value": "4gaBoards es un sistema de tableros para la gestión de proyectos en tiempo real. Antes de la 3.3.8, 4gaBoards permite a un gestor de proyectos autenticado suministrar secuencias de recorrido en el parámetro filename de GET /exports/:id/:filename. En server/api/controllers/boards/download.js, el valor decodificado de inputs.filename se pasa a path.join() debajo de private/exports/[user_id]/ sin validación de contención. Un valor manipulado, como .. / , puede seleccionar un archivo arbitrario legible por el proceso del servidor, y el archivo es devuelto al atacante. El gestor de cierre de fileStream luego pasa la misma ruta a fs.unlink(), eliminando el archivo seleccionado y potencialmente causando pérdida de datos o denegación de servicio. Este problema se ha solucionado en la versión 3.3.8."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "RARgames",
          "product": "4gaBoards",
          "versions": [
            {
              "version": "< 3.3.8",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-25T01:46:09.155633Z",
          "id": "CVE-2026-50186",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/RARgames/4gaBoards/commit/654151d7cc7739e43fd32d368e47bc4090cc65f5",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/RARgames/4gaBoards/releases/tag/v3.3.8",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-rv7w-hhqv-65cf",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-rv7w-hhqv-65cf",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}