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CVE-2026-102677

Estado: En análisisAlta (7.8)—

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local que permite a renderer comprometido escalar privilegios ejecutando código en contexto de preload no sandboxed. CWE-20 (validación inadecuada) en caché permite inyectar código arbitrario con privilegios elevados.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentBehavior Prevention on EndpointDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Electron — ElectronAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-102677",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-102677",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-02T12:18:07.959498Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 1.1
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "electron",
          "product": "electron",
          "versions": [
            {
              "status": "affected",
              "version": ">= 42.3.3, < 42.10.0"
            },
            {
              "status": "affected",
              "version": ">= 43.0.0-beta.1, < 43.5.0"
            },
            {
              "status": "affected",
              "version": ">= 44.0.0-alpha.1, < 44.0.0-beta.6"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-29T18:17:09.573",
  "references": [
    {
      "url": "https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/electron/electron/pull/52480",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/electron/electron/releases/tag/v42.10.0",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/electron/electron/releases/tag/v43.5.0",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/electron/electron/releases/tag/v44.0.0-beta.6",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6."
    }
  ],
  "lastModified": "2026-10-02T13:17:19.563",
  "sourceIdentifier": "security-advisories@github.com"
}