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CVE-2021-43788

Estado: ModificadaMedia (5)—

Nodebb is an open source Node.js based forum software. Prior to v1.18.5, a path traversal vulnerability was present that allowed users to access JSON files outside of the expected `languages/` directory. The vulnerability has been patched as of v1.18.5. Users are advised to upgrade as soon as possible.

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 (1)

Nodebb — Nodebb

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-43788",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.1
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "NodeBB",
          "product": "NodeBB",
          "versions": [
            {
              "status": "affected",
              "version": ">= 1.0.4, < 1.18.5"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-11-29T20:15:08.253",
  "references": [
    {
      "url": "https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/NodeBB/NodeBB/commit/c8b2fc46dc698db687379106b3f01c71b80f495f",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/NodeBB/NodeBB/security/advisories/GHSA-pfj7-2qfw-vwgm",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/NodeBB/NodeBB/commit/c8b2fc46dc698db687379106b3f01c71b80f495f",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/NodeBB/NodeBB/security/advisories/GHSA-pfj7-2qfw-vwgm",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nodebb is an open source Node.js based forum software. Prior to v1.18.5, a path traversal vulnerability was present that allowed users to access JSON files outside of the expected `languages/` directory. The vulnerability has been patched as of v1.18.5. Users are advised to upgrade as soon as possible."
    },
    {
      "lang": "es",
      "value": "Nodebb es un software de foro de código abierto basado en Node.js. En versiones anteriores a v1.18.5, se presentaba una vulnerabilidad de salto de ruta que permitía a usuarios acceder a archivos JSON fuera del directorio esperado \"languages/\". La vulnerabilidad ha sido parcheada a partir de la versión v1.18.5. Se aconseja a usuarios que actualicen lo antes posible"
    }
  ],
  "lastModified": "2026-06-17T04:11:26.480",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:nodebb:nodebb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6B0118EF-AB2D-420C-A454-405F2058F38A",
              "versionEndIncluding": "1.18.4",
              "versionStartIncluding": "1.0.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}