CVE-2026-70604
Fixed upstream EPSS <1%CVSS 7.4
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.
Products: electron
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| npm | electron | 42.0.0 |
| npm | electron | 41.4.0 |
| npm | electron | 40.9.3 |
| npm | electron | 39.8.10 |