Medium severity5.9NVD Advisory· Published Aug 5, 2026· Updated Sep 8, 2026
CVE-2026-70599
CVE-2026-70599
Description
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
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
electronnpm | < 39.8.7 | 39.8.7 |
electronnpm | >= 40.0.0-alpha.1, < 40.9.0 | 40.9.0 |
electronnpm | >= 41.0.0-alpha.1, < 41.2.0 | 41.2.0 |
electronnpm | >= 42.0.0-alpha.1, < 42.0.0-beta.1 | 42.0.0-beta.1 |
Affected products
1- Range: <39.8.7, <40.9.0, <41.2.0, <42.0.0-beta.1
Patches
Vulnerability mechanics
References
3News mentions
1- Electron Framework: 16 Vulnerabilities Disclosed, Including Sandbox Bypass and Prototype PollutionVypr Intelligence · Aug 5, 2026