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CVE-2014-7939

Status: ModifiedMedium (4.3)—

Google Chrome before 40.0.2214.91, when the Harmony proxy in Google V8 is enabled, allows remote attackers to bypass the Same Origin Policy via crafted JavaScript code with Proxy.create and console.log calls, related to HTTP responses that lack an "X-Content-Type-Options: nosniff" header.

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 (7)

Chromium — ChromiumGoogle — ChromeOpensuse — OpensuseRedhat — Enterprise Linux Desktop SupplementaryRedhat — Enterprise Linux Server SupplementaryRedhat — Enterprise Linux Server Supplementary EUSRedhat — Enterprise Linux Workstation Supplementary

CWEs

References

Raw JSON (NVD)

Show
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  "id": "CVE-2014-7939",
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          "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"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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      "affectedData": [
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          "product": "n/a",
          "versions": [
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  "published": "2015-01-22T22:59:20.117",
  "references": [
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      "source": "chrome-cve-admin@google.com"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
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  ],
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      "lang": "en",
      "value": "Google Chrome before 40.0.2214.91, when the Harmony proxy in Google V8 is enabled, allows remote attackers to bypass the Same Origin Policy via crafted JavaScript code with Proxy.create and console.log calls, related to HTTP responses that lack an \"X-Content-Type-Options: nosniff\" header."
    },
    {
      "lang": "es",
      "value": "Google Chrome anterior aq 40.0.2214.91, cuando el proxy Harmony en Google V8 está habilitado, permite a atacantes remotos evadir Same Origin Policy a través de código JavaScript manipulado con llamadas Proxy.create y console.log, relacionado con respuestas HTTP a que les falta una cabecera'X-Content-Type-Options: nosniff'."
    }
  ],
  "lastModified": "2026-06-17T00:15:59.297",
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