by Kastro
Paper/Archive/CVE-2026-34775

CVE-2026-34775

electron electron — Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes

EPSS 0.3%CVSS 9.8
critical.is priorityof 100
34
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 22.0.220 × 204.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
electron< 38.8.6–CNA
electron>= 39.0.0-alpha.1, < 39.8.4–CNA
electron>= 40.0.0-alpha.1, < 40.8.4–CNA
electron>= 41.0.0-alpha.1, < 41.0.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)6.8CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/electron/electron/security/advisories/GHSA-xwr5-m59h-vwqr