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CVE-2004-0091

Status: ModifiedMedium (4.3)—

NOTE: this issue has been disputed by the vendor. Cross-site scripting (XSS) vulnerability in register.php for unknown versions of vBulletin allows remote attackers to inject arbitrary HTML or web script via the reg_site (or possibly regsite) parameter. NOTE: the vendor has disputed this issue, saying "There is no hidden field called 'reg_site', nor any $reg_site variable anywhere in the vBulletin 2 or vBulletin 3 source code or templates, nor has it ever existed. We can only assume that this vulnerability was found in a site running code modified from that supplied by Jelsoft.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Jelsoft — Vbulletin

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2004-0091",
  "cveTags": [
    {
      "tags": [
        "disputed"
      ],
      "sourceIdentifier": "cve@mitre.org"
    }
  ],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "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": "2004-02-17T05:00:00.000",
  "references": [
    {
      "url": "http://marc.info/?l=bugtraq&m=107462349324945&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=vuln-dev&m=107462499927040&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=vuln-dev&m=107478592401619&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=vuln-dev&m=107488880317647&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://securitytracker.com/id?1008780",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=107462349324945&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://marc.info/?l=vuln-dev&m=107462499927040&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://marc.info/?l=vuln-dev&m=107478592401619&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://marc.info/?l=vuln-dev&m=107488880317647&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securitytracker.com/id?1008780",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "NOTE: this issue has been disputed by the vendor.  Cross-site scripting (XSS) vulnerability in register.php for unknown versions of vBulletin allows remote attackers to inject arbitrary HTML or web script via the reg_site (or possibly regsite) parameter.  NOTE: the vendor has disputed this issue, saying \"There is no hidden field called 'reg_site', nor any $reg_site variable anywhere in the vBulletin 2 or vBulletin 3 source code or templates, nor has it ever existed.  We can only assume that this vulnerability was found in a site running code modified from that supplied by Jelsoft."
    },
    {
      "lang": "es",
      "value": "** DISPUTADA ** NOTA: Este caso ha sido disputado por el fabricante. Vulnerabilidad de secuencias de comandos en sitios cruzados (XSS) en register.php de versiones desconocidas de vBulletin permite a atacantes remotos inyectar HTML arbitrario o script web mediante el parámetro reg_site.\r\nNOTA: El fabricante dice \"No hay ningún campo oculto llamado \"reg_site\", ni ninguna variable \"reg_site\" en el código fuente de vBulletin 2 o vBulletin 3 o sus plantillas, ni nunca lo existido. Sólo podemos asumir que esta vulnerabilidad ha sido encontra en un sitio corriendo código modificado del suministrador por Jelsoft.\""
    }
  ],
  "lastModified": "2026-06-16T22:04:55.317",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:jelsoft:vbulletin:3.0_beta_2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0A4E9C82-64CF-4487-8947-ED745C41945A"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}