Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes

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Summary

CVECVE-2026-34775
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-04 00:16:18 UTC
Updated2026-04-22 17:49:37 UTC
DescriptionElectron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers spawned in frames configured with nodeIntegrationInWorker: false could still receive Node.js integration. Apps are only affected if they enable nodeIntegrationInWorker. Apps that do not use nodeIntegrationInWorker are not affected. This issue has been patched in versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

EPSS: 0.000310000 probability, percentile 0.087730000 (date 2026-04-07)

Problem Types: CWE-653 | CWE-653 CWE-653: Improper Isolation or Compartmentalization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
3.1CNADECLARED6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Electronjs Electron All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Electron Electron affected < 38.8.6 Not specified
CNA Electron Electron affected >= 39.0.0-alpha.1, < 39.8.4 Not specified
CNA Electron Electron affected >= 40.0.0-alpha.1, < 40.8.4 Not specified
CNA Electron Electron affected >= 41.0.0-alpha.1, < 41.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/electron/electron/security/advisories/GHSA-xwr5-m59h-vwqr [email protected] github.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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