{
  "id": "CVE-2021-23568",
  "sourceIdentifier": "report@snyk.io",
  "published": "2022-01-10T14:10:17.043",
  "lastModified": "2022-01-13T19:58:24.690",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge."
    },
    {
      "lang": "es",
      "value": "El paquete extend2 versiones anteriores a 1.0.1, es vulnerable a una Contaminaci\u00f3n de Prototipos por medio de la funci\u00f3n extend debido a una fusi\u00f3n recursiva no segura"
    }
  ],
  "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:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      },
      {
        "source": "report@snyk.io",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4
      }
    ],
    "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": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:eggjs:extend2:*:*:*:*:*:node.js:*:*",
              "versionEndExcluding": "1.0.1",
              "matchCriteriaId": "D3A02AB9-BE8E-418A-9F62-A5CA23077D0E"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/eggjs/extend2/blob/master/index.js%23L50-L60",
      "source": "report@snyk.io",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8",
      "source": "report@snyk.io",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/eggjs/extend2/pull/2",
      "source": "report@snyk.io",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://snyk.io/vuln/SNYK-JS-EXTEND2-2320315",
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}