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CVE-2026-102674

Updated on 29 Sep 2026

Severity

8.2 High severity

Details

CVSS score
8.2
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

Impact

Windows opened from a sandboxed top-level document did not inherit that document’s HTML sandbox restrictions, so content that was meant to run sandboxed could open a window with the app’s full origin. GHSA-hq2x-r82h-9wj4 covers the same issue for sandboxed iframes.

Apps are only affected if they render untrusted content in a sandboxed top-level document that allows popups. Apps that deny popups from untrusted content with setWindowOpenHandler are not affected.

Workarounds

Return { action: 'deny' } from setWindowOpenHandler for windows opened by 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 [[email protected]](mailto:[email protected])

Details

Affected product:
React , Vue , electron , expo-electron-adapter
Affected packages:
electron @ 23.1.2 (+43 more)