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CVE-2026-102674— Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions

Quick assessment

Affected
electron electron
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

CVSS 8.2 · High
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I. Basic Information for CVE-2026-102674

Vulnerability Information

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Vulnerability Title
Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
electron electron < 41.10.6 -

II. Public POCs for CVE-2026-102674

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III. Intelligence Information for CVE-2026-102674

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Other References for CVE-2026-102674 (9)

Same Patch Batch · electron · 2026-09-29 · 5 CVEs total

CVE-2026-102676 8.3 HIGH Electron: <webview> can enable Node.js integration in Web Workers despite embedder restric
CVE-2026-102673 8.2 HIGH Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTa
CVE-2026-102677 7.8 HIGH Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
CVE-2026-102675 7.4 HIGH Electron: File and HTTP protocol handlers allow cross-origin reads without corsEnabled

IV. Related Vulnerabilities

Same product: electron
Same vendor: electron
Same weakness: CWE-266

V. Comments for CVE-2026-102674

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