Unauthenticated remote code execution through wikitext in ExternalData

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-100382",
    "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
    "assignerShortName": "wikimedia-foundation",
    "dateUpdated": "2026-09-25T21:04:02.848Z",
    "dateReserved": "2026-09-25T19:28:16.149Z",
    "datePublished": "2026-09-25T21:04:02.848Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "shortName": "wikimedia-foundation",
        "dateUpdated": "2026-09-25T21:04:02.848Z"
      },
      "title": "Unauthenticated remote code execution through wikitext in ExternalData",
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection.\n\nThis issue affects Mediawiki - ExternalData Extension: from * before 3.7.",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection.<p>This issue affects Mediawiki - ExternalData Extension: from * before 3.7.</p>"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Wikimedia Foundation",
          "product": "Mediawiki - ExternalData Extension",
          "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/ExternalData/+/refs/heads/master",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "*",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.7"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
              "cweId": "CWE-78",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://phabricator.wikimedia.org/T434961"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ExternalData/+/1326012"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-88",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-88 OS Command Injection"
            }
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "SomeRandomDeveloper",
          "type": "finder"
        }
      ]
    }
  }
}