CVE-2026-34775
Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes
Description
### Impact 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. ### Workarounds Avoid enabling `nodeIntegrationInWorker` in apps that also open child windows or embed content with differing webPreferences. ### Fixed Versions * `41.0.0` * `40.8.4` * `39.8.4` * `38.8.6` ### For more information If there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)
How to fix CVE-2026-34775
To remediate CVE-2026-34775, upgrade the affected package to a fixed version below.
- —upgrade to 38.8.6 or later
Is CVE-2026-34775 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 38.8.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |