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CVE-2008-4930

Estado: ModificadaMedia (5)—

MyBB (aka MyBulletinBoard) 1.4.2 does not properly handle an uploaded file with a nonstandard file type that contains HTML sequences, which allows remote attackers to cause that file to be processed as HTML by Internet Explorer's content inspection, aka "Incomplete protection against MIME-sniffing." NOTE: this could be leveraged for XSS and other attacks.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Mybb — Mybb

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2008-4930",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2008-11-04T21:00:05.987",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2008-10/0203.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2008-10/0472.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2008/11/01/2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2008-10/0203.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2008-10/0472.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2008/11/01/2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "MyBB (aka MyBulletinBoard) 1.4.2 does not properly handle an uploaded file with a nonstandard file type that contains HTML sequences, which allows remote attackers to cause that file to be processed as HTML by Internet Explorer's content inspection, aka \"Incomplete protection against MIME-sniffing.\" NOTE: this could be leveraged for XSS and other attacks."
    },
    {
      "lang": "es",
      "value": "MyBB (también conocido como MyBulletinBoard) v1.4.2 no maneja de forma adecuada un fichero que se haya subido y que sea de un tipo no estándar que contenga secuencias HTML; esto permite a atacantes remotos provocar que el fichero sea procesado como un HTML por las inspecciones de contenidos de Internet Explorer. También se conoce como \"Protección incompleta contra MIME-sniffing\". NOTA: Esto podría ser utilizado para XSS y otro tipo de ataques."
    }
  ],
  "lastModified": "2026-06-16T22:58:47.213",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mybb:mybb:1.4.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9503D6C2-DCBC-4720-BE29-34913950407E"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}