CVE-2026-70599

EUVD-2026-53428
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 9.11%
Affected Products (NVD)
VendorProductVersion
electronjselectron
𝑥
< 39.8.7
electronjselectron
40.0.0 ≤
𝑥
< 40.9.0
electronjselectron
41.0.0 ≤
𝑥
< 41.2.1
electronjselectron
42.0.0:alpha1
electronjselectron
42.0.0:alpha2
electronjselectron
42.0.0:alpha3
electronjselectron
42.0.0:alpha4
electronjselectron
42.0.0:alpha5
electronjselectron
42.0.0:alpha6
electronjselectron
42.0.0:beta1
electronjselectron
42.0.0:beta2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/electron/electron/commit/0cbdf2f0375466d701aa393c92e0ec29eb89ea6c
https://github.com/electron/electron/security/advisories/GHSA-9pf5-hg6p-4pwp