{
  "id": "CVE-2020-26121",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2020-09-27T21:15:13.063",
  "lastModified": "2024-11-21T05:19:17.477",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in the FileImporter extension for MediaWiki before 1.34.4. An attacker can import a file even when the target page is protected against \"page creation\" and the attacker should not be able to create it. This occurs because of a mishandled distinction between an upload restriction and a create restriction. An attacker cannot leverage this to overwrite anything, but can leverage this to force a wiki to have a page with a disallowed title."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en la extensi\u00f3n FileImporter para MediaWiki versiones anteriores a 1.34.4. Un atacante puede importar un archivo incluso cuando la p\u00e1gina de destino est\u00e1 protegida contra \"page creation\" y el atacante no deber\u00eda poder crearlo. Esto ocurre debido a una distinci\u00f3n manejada inapropiadamente entre una restricci\u00f3n de carga y una restricci\u00f3n de creaci\u00f3n. Un atacante no puede aprovechar esto para sobrescribir cualquier cosa, pero puede aprovechar esto para obligar a un wiki a tener una p\u00e1gina con un t\u00edtulo no permitido"
    }
  ],
  "metrics": {
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      {
        "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:N/I:H/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "baseScore": 5.0,
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "configurations": [
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      "nodes": [
        {
          "operator": "OR",
          "negate": false,
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  "references": [
    {
      "url": "https://commons.wikimedia.org/w/index.php?oldid=454609892#File:Wiki.png",
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
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    },
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      "source": "cve@mitre.org"
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}