Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, the mode option of webContents.openDevTools() was not sanitized before use by the DevTools frontend. If an attacker can influence this value, script under their control may run in the DevTools context, which in unsandboxed configurations has access to Node.js, including when untrusted input reaches the mode argument of openDevTools() or untrusted content calls openDevTools() on a webview it embeds. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.
Affected products
electronjs: electron
References10
- github.com/electron/electron/security/advisories/GHSA-4f78-qhmw… Vendor Advisory
- github.com/electron/electron/commit/04614eed17986bddc43eb509ec8… Patch
- github.com/electron/electron/commit/2046ae87731d80a7b535512ae19… Patch
- github.com/electron/electron/commit/969741f9f847c5c583f6bbc63ca… Patch
- github.com/electron/electron/commit/efc4d3c6b6f1c04f658ca0d9d25… Patch
- github.com/electron/electron/pull/50665 Issue TrackingPatch
- github.com/electron/electron/pull/50666 Issue TrackingPatch
- github.com/electron/electron/pull/50667 Issue TrackingPatch
- github.com/electron/electron/pull/50668 Issue TrackingPatch
- github.com/electron/electron/releases/tag/v39.8.7 Release Notes
Metrics
- CVSS 3.1
-
5.7
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N - EPSS — exploit probability
- 1% percentile: 46 · as of 13 November 2026
- CWE
- CWE-94CWE-116
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