{
  "id": "CVE-2019-12830",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2019-06-15T18:29:00.220",
  "lastModified": "2024-11-21T04:23:40.527",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "In MyBB before 1.8.21, an attacker can exploit a parsing flaw in the Private Message / Post renderer that leads to [video] BBCode persistent XSS to take over any forum account, aka a nested video MyCode issue."
    },
    {
      "lang": "es",
      "value": "En MyBB anterior a 1.8.21, un atacante puede aprovechar un fallo de an\u00e1lisis en el renderizador de Publicaci\u00f3n y Mensaje Privado que conlleva a un ataque XSS persistente de BBCode de [video] para controlar cualquier cuenta del foro, tambi\u00e9n se conoce como un problema de video anidado de MyCode."
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 5.8
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "SINGLE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 6.8,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.8.21",
              "matchCriteriaId": "438D60BF-E8A0-41F9-AE8E-B17569ECD586"
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  ],
  "references": [
    {
      "url": "https://blog.mybb.com/2019/06/10/mybb-1-8-21-released-security-maintenance-release/",
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://blog.ripstech.com/2019/mybb-stored-xss-to-rce/",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://blog.mybb.com/2019/06/10/mybb-1-8-21-released-security-maintenance-release/",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://blog.ripstech.com/2019/mybb-stored-xss-to-rce/",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}