Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
### 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)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-102676US | critical9.8OT elevated | — | ||
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, an Electron <webview> g… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/electron/electronPACKAGE
- https://github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2WEB
- https://github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671WEB
- https://github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886WEB
- https://github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233aeWEB
- https://github.com/electron/electron/releases/tag/v41.10.6WEB
- https://github.com/electron/electron/releases/tag/v42.9.2WEB
- https://github.com/electron/electron/releases/tag/v43.4.1WEB
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