GHSA-9QH4-3JW8-366W

Vulnerability from github – Published: 2026-09-29 18:02 – Updated: 2026-09-29 18:02
VLAI
Summary
Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
Details

Impact

A <webview> could enable Node.js integration in its Web Workers even when its embedder had Node.js integration disabled, giving guest content more privilege than the embedder allowed.

Apps are only affected if they enable the <webview> tag and the embedder is unsandboxed. Apps that do not use <webview>, or that keep the embedder sandboxed, are not affected.

Workarounds

Remove nodeIntegrationInWorker from the guest preferences in a will-attach-webview handler, or do not enable the <webview> tag when loading untrusted content.

Fixed Versions

  • 44.0.0-beta.5
  • 43.4.1
  • 42.9.2
  • 41.10.6

For more information

If you have any questions or comments about this advisory, email us at security@electronjs.org

Severity
8.3 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "41.10.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "42.0.0-alpha.1"
            },
            {
              "fixed": "42.9.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "43.0.0-alpha.1"
            },
            {
              "fixed": "43.4.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "44.0.0-alpha.1"
            },
            {
              "fixed": "44.0.0-beta.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-102676"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1188",
      "CWE-269"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-29T18:02:18Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\n\nA `\u003cwebview\u003e` could enable Node.js integration in its Web Workers even when its embedder had Node.js integration disabled, giving guest content more privilege than the embedder allowed.\n\nApps are only affected if they enable the `\u003cwebview\u003e` tag and the embedder is unsandboxed. Apps that do not use `\u003cwebview\u003e`, or that keep the embedder sandboxed, are not affected.\n\n### Workarounds\n\nRemove `nodeIntegrationInWorker` from the guest preferences in a `will-attach-webview` handler, or do not enable the `\u003cwebview\u003e` tag when loading untrusted content.\n\n### Fixed Versions\n\n* `44.0.0-beta.5`\n* `43.4.1`\n* `42.9.2`\n* `41.10.6`\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)",
  "id": "GHSA-9qh4-3jw8-366w",
  "modified": "2026-09-29T18:02:19Z",
  "published": "2026-09-29T18:02:18Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233ae"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/electron/electron"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/releases/tag/v41.10.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/releases/tag/v42.9.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/releases/tag/v43.4.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/releases/tag/v44.0.0-beta.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Electron: \u003cwebview\u003e can enable Node.js integration in Web Workers despite embedder restrictions"
}



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