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CVE-2018-5119

Estado: ModificadaMedia (5.3)—

La vista del lector mostrará el contenido de orígenes cruzados cuando las cabeceras CORS estén configurados para prohibir la carga de contenido de orígenes cruzados por un sitio. Esto podría permitir el acceso a contenidos que deberían ser restringidos en la vista del lector. Esta vulnerabilidad afecta a las versiones anteriores a la 58 de Firefox.

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 (2)

Canonical — Ubuntu LinuxMozilla — Firefox

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2018-5119",
  "cveTags": [],
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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        "impactScore": 1.4,
        "exploitabilityScore": 3.9
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  "affected": [
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      "affectedData": [
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          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
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              "version": "unspecified",
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  "published": "2018-06-11T21:29:13.670",
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The reader view will display cross-origin content when CORS headers are set to prohibit the loading of cross-origin content by a site. This could allow access to content that should be restricted in reader view. This vulnerability affects Firefox < 58."
    },
    {
      "lang": "es",
      "value": "La vista del lector mostrará el contenido de orígenes cruzados cuando las cabeceras CORS estén configurados para prohibir la carga de contenido de orígenes cruzados por un sitio. Esto podría permitir el acceso a contenidos que deberían ser restringidos en la vista del lector. Esta vulnerabilidad afecta a las versiones anteriores a la 58 de Firefox."
    }
  ],
  "lastModified": "2026-06-17T01:59:39.453",
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