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[ CVE-2026-102676 · Published 29 Sep 2026 ]

Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions

CVSS 9.8 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Critical severity: CVSS 9.8

[ Description ]Official description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, an Electron <webview> guest could enable nodeIntegrationInWorker for its Web Workers even when the unsandboxed embedder had Node.js integration disabled, allowing untrusted guest content to create a Node-enabled worker with more privilege than the embedder granted. Applications that do not enable the <webview> tag or that keep the embedder sandboxed are not affected. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.

[ Fixes ]Fixes and patches

  • electron 41.10.6Fixed version · GitHub Advisories · npm package electron: upgrade to 41.10.6 or later (affected < 41.10.6)
  • electron 42.9.2Fixed version · GitHub Advisories · npm package electron: upgrade to 42.9.2 or later (affected >= 42.0.0-alpha.1, < 42.9.2)
  • electron 43.4.1Fixed version · GitHub Advisories · npm package electron: upgrade to 43.4.1 or later (affected >= 43.0.0-alpha.1, < 43.4.1)
  • electron 44.0.0-beta.5Fixed version · GitHub Advisories · npm package electron: upgrade to 44.0.0-beta.5 or later (affected >= 44.0.0-alpha.1, < 44.0.0-beta.5)
  • Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
  • Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
  • Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
  • Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Packages ]Affected open-source packages

[ References ]References