{
  "id": "CVE-2021-21321",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2021-03-02T04:15:12.487",
  "lastModified": "2021-03-09T13:43:17.273",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "fastify-reply-from is an npm package which is a fastify plugin to forward the current http request to another server. In fastify-reply-from before version 4.0.2, by crafting a specific URL, it is possible to escape the prefix of the proxied backend service. If the base url of the proxied server is \"/pub/\", a user expect that accessing \"/priv\" on the target service would not be possible. In affected versions, it is possible. This is fixed in version 4.0.2."
    },
    {
      "lang": "es",
      "value": "fastify-reply-from es un paquete npm que es un plugin fastify para reenviar la petici\u00f3n http actual a otro servidor. En fastify-reply-from anterior a la versi\u00f3n 4.0.2, al dise\u00f1ar una URL espec\u00edfica, es posible escapar del prefijo del servicio de backend proxy. Si la URL base del servidor proxy es \"/pub/\", el usuario espera que no sea posible acceder a \"/priv\" en el servicio de destino. En versiones afectadas, es posible. Esto se corrige en la versi\u00f3n 4.0.2"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.0
      },
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        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.8
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "security-advisories@github.com",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:fastify-reply-from_project:fastify-reply-from:*:*:*:*:*:node.js:*:*",
              "versionEndExcluding": "4.0.2",
              "matchCriteriaId": "FABC1851-154A-4609-849E-ED8D1903E530"
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  "references": [
    {
      "url": "https://github.com/fastify/fastify-reply-from/commit/dea227dda606900cc01870d08541b4dcc69d3889",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-qmw8-3v4g-gwj4",
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
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    },
    {
      "url": "https://www.npmjs.com/package/fastify-reply-from",
      "source": "security-advisories@github.com",
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}