FKIE_CVE-2026-70610

Vulnerability from fkie_nvd - Published: 2026-08-05 18:17 - Updated: 2026-08-06 15:17
Severity
5.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4, objects copied across the contextBridge boundary from untrusted content could carry an attacker-influenced prototype, enabling prototype-pollution-style attacks against preload code despite context isolation being enabled. Apps are only affected if their preload code accepts object arguments from untrusted content and reads properties from them without own-property checks, while apps that only accept primitive arguments or validate object arguments are not affected. This issue is fixed in 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4.
References
security-advisories@github.comhttps://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713
security-advisories@github.comhttps://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd
security-advisories@github.comhttps://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55
security-advisories@github.comhttps://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737
security-advisories@github.comhttps://github.com/electron/electron/pull/51083
security-advisories@github.comhttps://github.com/electron/electron/pull/51084
security-advisories@github.comhttps://github.com/electron/electron/pull/51085
security-advisories@github.comhttps://github.com/electron/electron/pull/51086
security-advisories@github.comhttps://github.com/electron/electron/releases/tag/v39.8.9
security-advisories@github.comhttps://github.com/electron/electron/releases/tag/v40.9.2
security-advisories@github.comhttps://github.com/electron/electron/releases/tag/v41.2.2
security-advisories@github.comhttps://github.com/electron/electron/releases/tag/v42.0.0-beta.4
security-advisories@github.comhttps://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "electron",
          "vendor": "electron",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 39.8.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 40.0.0-alpha.1, \u003c 40.9.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 41.0.0-alpha.1, \u003c 41.2.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 42.0.0-alpha.1, \u003c 42.0.0-beta.4"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4, objects copied across the contextBridge boundary from untrusted content could carry an attacker-influenced prototype, enabling prototype-pollution-style attacks against preload code despite context isolation being enabled. Apps are only affected if their preload code accepts object arguments from untrusted content and reads properties from them without own-property checks, while apps that only accept primitive arguments or validate object arguments are not affected. This issue is fixed in 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4."
    }
  ],
  "id": "CVE-2026-70610",
  "lastModified": "2026-08-06T15:17:27.153",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-70610",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-06T14:30:58.717300Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-05T18:17:15.463",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/pull/51083"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/pull/51084"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/pull/51085"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/pull/51086"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/releases/tag/v39.8.9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/releases/tag/v40.9.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/releases/tag/v41.2.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/releases/tag/v42.0.0-beta.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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