CVE-2026-102674

HIGH 8.2

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

CVSS Score

8.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-266 CWE-693
Vendor	electron
Product	electron
Published	Sep 29, 2026
Last Updated	Sep 29, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

electron / electron

< 41.10.6 >= 42.0.0-alpha.1, < 42.9.2 >= 43.0.0-alpha.1, < 43.4.1 >= 44.0.0-alpha.1, < 44.0.0-beta.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗