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[ CVE-2026-102674 · Published 29 Sep 2026 ]

Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions

CVSS 6.1 EPSS <1%Fix available

[ 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, windows opened from a sandboxed top-level document did not inherit that document's active HTML sandbox restrictions. Untrusted content in a sandboxed top-level document that was permitted to open popups could therefore create a window with the Electron application's full origin instead of the restricted origin intended by the sandbox. Applications that deny such popups with setWindowOpenHandler 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