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CVE-2020-4075

Status: ModifiedHigh (7.5)—

In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

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)

Electronjs — Electron

CWEs

References

Raw JSON (NVD)

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  "id": "CVE-2020-4075",
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
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          "integrityImpact": "NONE",
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  "published": "2020-07-07T00:15:10.513",
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      "value": "In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4."
    },
    {
      "lang": "es",
      "value": "En Electron antes de las versiones 7.2.4, 8.2.4 y 9.0.0-beta21, una lectura arbitraria de archivos locales es posible al definir opciones de ventana no seguras en una ventana secundaria abierta por medio de window.open. Como solución alternativa, asegúrense de llamar a la función \"event.preventDefault()\" en todos los eventos de ventanas nuevas donde la \"url\" u \"options\" no es algo que se espera. Esto es corregido en las versiones 9.0.0-beta.21, 8.2.4 y 7.2.4"
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  "lastModified": "2026-06-17T03:19:31.467",
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