Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102676
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, an Electron <webview> guest could enable nodeIntegrationInWorker for its Web Workers even when the unsandboxed embedder had Node.js integration disabled, allowing untrusted guest content to create a Node-enabled worker with more privilege than the embedder granted. Applications that do not enable the <webview> tag or that keep the embedder sandboxed 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 8.3 HIGH from [email protected]

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

Problem Types: CWE-269 | CWE-1188 | CWE-269 CWE-269: Improper Privilege Management | CWE-1188 CWE-1188: Insecure Default Initialization of Resource

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.3HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
3.1CNADECLARED8.3HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

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/6462a2e1dc4e6adffd3b7d9b9be1474c45dc... [email protected] github.com
github.com/electron/electron/releases/tag/v43.4.1 [email protected] github.com
github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab... [email protected] github.com
github.com/electron/electron/releases/tag/v41.10.6 [email protected] github.com
github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a3... [email protected] github.com
github.com/electron/electron/releases/tag/v42.9.2 [email protected] github.com
github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w [email protected] github.com
github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e18462... [email protected] github.com
github.com/electron/electron/releases/tag/v44.0.0-beta.5 [email protected] github.com
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