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CVE-2026-34781

Estado: AnalizadaBaja (3.3)—

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, apps that call clipboard.readImage() may be vulnerable to a denial of service. If the system clipboard contains image data that fails to decode, the resulting null bitmap is passed unchecked to image construction, triggering a controlled abort and crashing the process. Apps are only affected if they call clipboard.readImage(). Apps that do not read images from the clipboard are not affected. This issue does not allow memory corruption or code execution. This vulnerability is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5.

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)

Electronjs — Electron

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-34781",
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-04-08T16:10:12.958024Z"
        }
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          "version": "3.1",
          "baseScore": 2.8,
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "exploitabilityScore": 1.3
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          "userInteraction": "REQUIRED",
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          "vendor": "electron",
          "product": "electron",
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              "version": "< 39.8.5"
            },
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              "version": ">= 40.0.0-alpha.1, < 40.8.5"
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              "version": ">= 42.0.0-alpha.1, < 42.0.0-alpha.5"
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  "published": "2026-04-07T22:16:23.123",
  "references": [
    {
      "url": "https://github.com/electron/electron/security/advisories/GHSA-f37v-82c4-4x64",
      "tags": [
        "Vendor Advisory"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
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          "lang": "en",
          "value": "CWE-476"
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  ],
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    {
      "lang": "en",
      "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, apps that call clipboard.readImage() may be vulnerable to a denial of service. If the system clipboard contains image data that fails to decode, the resulting null bitmap is passed unchecked to image construction, triggering a controlled abort and crashing the process. Apps are only affected if they call clipboard.readImage(). Apps that do not read images from the clipboard are not affected. This issue does not allow memory corruption or code execution. This vulnerability is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5."
    },
    {
      "lang": "es",
      "value": "Electron es un framework para escribir aplicaciones de escritorio multiplataforma usando JavaScript, HTML y CSS. Antes de 39.8.5, 40.8.5, 41.1.0 y 42.0.0-alpha.5, las aplicaciones que llaman a clipboard.readImage() pueden ser vulnerables a una denegación de servicio. Si el portapapeles del sistema contiene datos de imagen que no se decodifican, el mapa de bits nulo resultante se pasa sin verificar a la construcción de la imagen, lo que desencadena un aborto controlado y bloquea el proceso. Las aplicaciones solo se ven afectadas si llaman a clipboard.readImage(). Las aplicaciones que no leen imágenes del portapapeles no se ven afectadas. Este problema no permite la corrupción de memoria ni la ejecución de código. Esta vulnerabilidad está corregida en 39.8.5, 40.8.5, 41.1.0 y 42.0.0-alpha.5."
    }
  ],
  "lastModified": "2026-07-24T22:10:00.140",
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