CVE-2026-70599
Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-346 |
| Vendor | electron |
| Product | electron |
| Published | Aug 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
electron / electron
< 39.8.7 >= 40.0.0-alpha.1, < 40.9.0 >= 41.0.0-alpha.1, < 41.2.0 >= 42.0.0-alpha.1, < 42.0.0-beta.1