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CVE-2026-70609

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.

Impact

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 packages

EcosystemPackageAffectedFixed in
npmelectron< 39.8.739.8.7

Affected products

VendorProductAffected versions
ElectronjsElectron
before 39.8.7
from 40.0.0 before 40.9.0
from 41.0.0 before 41.2.0
Version 42.0.0

Weakness classification

CWE-94CWE-116

References