{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "99942EE7-37A1-42CD-B392-8ED9362430E2",
              "versionEndExcluding": "1.35.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7377A8D6-3B2E-4FD6-820A-4CD632158111",
              "versionEndExcluding": "1.36.3",
              "versionStartIncluding": "1.36.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5950CA7B-C437-4162-A8C5-5F31625145A8",
              "versionEndExcluding": "1.37.1",
              "versionStartIncluding": "1.37.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=mcrundo followed by action=mcrrestore to replace the content of any arbitrary page (that the user doesn\u0027t have edit rights for). This applies to any public wiki, or a private wiki that has at least one page set in $wgWhitelistRead."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en MediaWiki versiones anteriores a 1.35.5, versiones 1.36.x anteriores a 1.36.3 y versiones 1.37.x anteriores a 1.37.1. Es posible usar action=mcrundo seguido de action=mcrrestore para reemplazar el contenido de cualquier p\u00e1gina arbitraria (para la que el usuario no tenga derechos de edici\u00f3n). Esto se aplica a cualquier wiki p\u00fablico, o a un wiki privado que tenga al menos una p\u00e1gina establecida en $wgWhitelistRead"
    }
  ],
  "id": "CVE-2021-44857",
  "lastModified": "2026-06-17T04:12:54.070",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-12-17T04:15:39.137",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://phabricator.wikimedia.org/T297322"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://security.gentoo.org/glsa/202305-24"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.mediawiki.org/wiki/2021-12_security_release/FAQ"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://phabricator.wikimedia.org/T297322"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/202305-24"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.mediawiki.org/wiki/2021-12_security_release/FAQ"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}