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Vulnerability · Published Sep 29, 2026 · Assigned by GitHub_M

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

High 8.2

In plain English

A high-severity security flaw in electron from electron. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.2%top 85.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npmelectron41.10.6GHSA-gr2m-v5gq-v685
npmelectron42.9.2GHSA-gr2m-v5gq-v685
npmelectron43.4.1GHSA-gr2m-v5gq-v685
npmelectron44.0.0-beta.5GHSA-gr2m-v5gq-v685

Affected products (as reported)

VendorProductVersions
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

Weakness: CWE-266, CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

References