HighGHSA-9qh4-3jw8-366wCVE-2026-102676

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

Published 29 Sept 2026 · Updated 29 Sept 2026

Affected packages

electronnpm

Affected: <41.10.6
Fixed in: 41.10.6

Update to the fixed version for your release line, for example:npm install electron@41.10.6

electronnpm

Affected: >=42.0.0-alpha.1 <42.9.2
Fixed in: 42.9.2

Update to the fixed version for your release line, for example:npm install electron@42.9.2

electronnpm

Affected: >=43.0.0-alpha.1 <43.4.1
Fixed in: 43.4.1

Update to the fixed version for your release line, for example:npm install electron@43.4.1

electronnpm

Affected: >=44.0.0-alpha.1 <44.0.0-beta.5
Fixed in: 44.0.0-beta.5

Update to the fixed version for your release line, for example:npm install electron@44.0.0-beta.5

Details

Impact

A <webview> could enable Node.js integration in its Web Workers even when its embedder had Node.js integration disabled, giving guest content more privilege than the embedder allowed.

Apps are only affected if they enable the <webview> tag and the embedder is unsandboxed. Apps that do not use <webview>, or that keep the embedder sandboxed, are not affected.

Workarounds

Remove nodeIntegrationInWorker from the guest preferences in a will-attach-webview handler, or do not enable the <webview> tag when loading untrusted content.

Fixed Versions

44.0.0-beta.5
43.4.1
42.9.2
41.10.6

For more information

If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.