What’s Vulnerable › Vulnerabilities
CVE-2026-34775: Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-04 · updated 2026-07-24
- Weakness: CWE-653
Description
Electron 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.
Affected products
- electron: before 38.8.6; from 39.0.0 before 39.8.4; from 40.0.0 before 40.8.4; 41.0.0-alpha1, 41.0.0-alpha2, 41.0.0-alpha3, 41.0.0-alpha4, 41.0.0-alpha5, 41.0.0-alpha6 (+8) — fixed in 38.8.6, 39.8.4, 40.8.4
How to fix
Upgrade to a fixed version: electron 38.8.6, 39.8.4, 40.8.4. Check the vendor advisory for mitigations.
References
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