CVE-2026-70599
MEDIUMElectron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin
Title source: cnaDescription
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/electron/electron/security/advisories/GHSA-9pf5-hg6p-4pwp
X_Refsource_Misc x_refsource_misc
https://github.com/electron/electron/commit/0cbdf2f0375466d701aa393c92e0ec29eb89ea6c
Scores
CVSS v3
5.9
EPSS
0.0014
EPSS Percentile
3.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-346
Status
published
Products (8)
electron/electron
< 39.8.7
electron/electron
>= 40.0.0-alpha.1, < 40.9.0
electron/electron
>= 41.0.0-alpha.1, < 41.2.0
electron/electron
>= 42.0.0-alpha.1, < 42.0.0-beta.1
npm/electron
0 - 39.8.7npm
npm/electron
40.0.0-alpha.1 - 40.9.0npm
npm/electron
41.0.0-alpha.1 - 41.2.0npm
npm/electron
42.0.0-alpha.1 - 42.0.0-beta.1npm
Published
Aug 05, 2026
Tracked Since
Aug 05, 2026