Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102674
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-29 17:17:07 UTC
Updated2026-09-30 19:38:27 UTC
DescriptionElectron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, windows opened from a sandboxed top-level document did not inherit that document's active HTML sandbox restrictions. Untrusted content in a sandboxed top-level document that was permitted to open popups could therefore create a window with the Electron application's full origin instead of the restricted origin intended by the sandbox. Applications that deny such popups with setWindowOpenHandler are not affected. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.

Risk And Classification

Primary CVSS: v3.1 8.2 HIGH from [email protected]

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

Problem Types: CWE-266 | CWE-693 | CWE-266 CWE-266: Incorrect Privilege Assignment | CWE-693 CWE-693: Protection Mechanism Failure

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
3.1CNADECLARED8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Electron Electron affected < 41.10.6 Not specified
CNA Electron Electron affected >= 42.0.0-alpha.1, < 42.9.2 Not specified
CNA Electron Electron affected >= 43.0.0-alpha.1, < 43.4.1 Not specified
CNA Electron Electron affected >= 44.0.0-alpha.1, < 44.0.0-beta.5 Not specified

References

ReferenceSourceLinkTags
github.com/electron/electron/commit/29fc130569f970e91e355383821a4af0f257... [email protected] github.com
github.com/electron/electron/security/advisories/GHSA-gr2m-v5gq-v685 [email protected] github.com
github.com/electron/electron/releases/tag/v43.4.1 [email protected] github.com
github.com/electron/electron/commit/e9c4d3cbe912e18d7c63af78e63e98ae7a48... [email protected] github.com
github.com/electron/electron/commit/3ecf3e74f4be6e2360644679b0b4698742be... [email protected] github.com
github.com/electron/electron/commit/6594d5a5b074cf501da084dc7908d3df0d68... [email protected] github.com
github.com/electron/electron/releases/tag/v41.10.6 [email protected] github.com
github.com/electron/electron/releases/tag/v42.9.2 [email protected] github.com
github.com/electron/electron/releases/tag/v44.0.0-beta.5 [email protected] github.com
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