medium5.9
CVE-2026-70599
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.
Impact
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, serial-port and media permission checks made from an iframe passed the top-level frame origin to session.setPermissionCheckHandler instead of the requesting iframe origin. Origin-based handler logic could grant a cross-origin iframe device access intended only for the top-level origin. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | electron | < 39.8.7 | 39.8.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Electronjs | Electron | before 39.8.7 from 40.0.0 before 40.9.0 from 41.0.0 before 41.2.1 Version 42.0.0 |