fkie_cve-2026-70611

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.1, and 42.0.0-beta.3, the DevTools reveal in file manager action could launch the target file rather than reveal it. An attacker with a separate means of running script inside the DevTools frontend, such as a malicious DevTools extension, could use showItemInFolder handling to execute native code outside the sandbox when DevTools is opened for windows exposed to untrusted content or untrusted DevTools extensions. This issue is fixed in 39.8.9, 40.9.2, 41.2.1, and 42.0.0-beta.3.

GHSA-f2r8-jv7c-xqmp — Electron: DevTools embedder handler executes arbitrary files via shell open

Affected: npm: electron

### Impact The DevTools "reveal in file manager" action could launch the target file rather than reveal it. An attacker with a separate means of running script inside the DevTools frontend (such as a malicious DevTools extension) could use this to execute native code outside the sandbox.

Apps are only affected if DevTools is opened for windows exposed to untrusted content or untrusted DevTools extensions. Apps that do not open DevTools in that context are not affected.

### Workarounds Do not open DevTools for windows that load untrusted content, and do not load untrusted DevTools extensions.

### Fixed Versions * `42.0.0-beta.3` * `41.2.1` * `40.9.2` * `39.8.9`

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

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fkie_cve-2026-70611

GHSA-f2r8-jv7c-xqmp — Electron: DevTools embedder handler executes arbitrary files via shell open