Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS

Overview

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0.

Affected

• electron < 39.8.10
• electron >= 40.0.0, < 40.9.3
• electron >= 41.0.0, < 41.4.0
• electron = 42.0.0

Remediation

Upgrade past the affected range:

• electron 41.4.0

Package advisory (CVE-2026-70604)

Affected packages:

• electron >= 42.0.0-alpha.1, < 42.0.0
• electron >= 41.0.0-alpha.1, < 41.4.0
• electron >= 40.0.0-alpha.1, < 40.9.3
• electron < 39.8.10

Patched in:

• electron 42.0.0
• electron 41.4.0
• electron 40.9.3
• electron 39.8.10

Source: https://github.com/advisories/GHSA-v3j7-r9gq-3gjw