Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-70599
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-05 16:17:03 UTC
Updated2026-08-05 19:17:38 UTC
DescriptionElectron 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.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-346 | CWE-346 CWE-346: Origin Validation Error

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Electron Electron affected < 39.8.7 Not specified
CNA Electron Electron affected >= 40.0.0-alpha.1, < 40.9.0 Not specified
CNA Electron Electron affected >= 41.0.0-alpha.1, < 41.2.0 Not specified
CNA Electron Electron affected >= 42.0.0-alpha.1, < 42.0.0-beta.1 Not specified

References

ReferenceSourceLinkTags
github.com/electron/electron/security/advisories/GHSA-9pf5-hg6p-4pwp [email protected] github.com
github.com/electron/electron/commit/0cbdf2f0375466d701aa393c92e0ec29eb89... [email protected] github.com
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