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.
Fix
Patch, vendor advisory and mitigation references on NVD 9
- https://github.com/electron/electron/commit/04614eed17986bddc43eb509ec870424ee6a47d1 Patch
- https://github.com/electron/electron/commit/2046ae87731d80a7b535512ae19acb529e10e33b Patch
- https://github.com/electron/electron/commit/969741f9f847c5c583f6bbc63ca22549dbd954ce Patch
- https://github.com/electron/electron/commit/efc4d3c6b6f1c04f658ca0d9d2512dcfe78eb7ba Patch
- https://github.com/electron/electron/pull/50665 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50666 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50667 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50668 Issue Tracking, Patch
- https://github.com/electron/electron/security/advisories/GHSA-4f78-qhmw-8j8m Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.7 · electronjsNVD modified 2026-10-08 13:53
Affected (CPE criteria) 8
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:*
References 13
- https://github.com/electron/electron/commit/04614eed17986bddc43eb509ec870424ee6a47d1 Patch
- https://github.com/electron/electron/commit/2046ae87731d80a7b535512ae19acb529e10e33b Patch
- https://github.com/electron/electron/commit/969741f9f847c5c583f6bbc63ca22549dbd954ce Patch
- https://github.com/electron/electron/commit/efc4d3c6b6f1c04f658ca0d9d2512dcfe78eb7ba Patch
- https://github.com/electron/electron/pull/50665 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50666 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50667 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50668 Issue Tracking, Patch
- https://github.com/electron/electron/releases/tag/v39.8.7 Release Notes
- https://github.com/electron/electron/releases/tag/v40.9.0 Release Notes
- https://github.com/electron/electron/releases/tag/v41.2.0 Release Notes
- https://github.com/electron/electron/releases/tag/v42.0.0-beta.1 Release Notes
- https://github.com/electron/electron/security/advisories/GHSA-4f78-qhmw-8j8m Vendor Advisory