Hidden Functionality Affecting electron package, versions <38.8.6>=39.0.0-alpha.1 <39.8.0>=40.0.0-alpha.2 <40.7.0>=41.0.0-alpha.1 <41.0.0-beta.8
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- published3 Apr 2026
- disclosed3 Apr 2026
- creditUnknown
Introduced: 3 Apr 2026
NewCVE-2026-34769 (opens in a new tab)How to fix?
Upgrade electron to version 38.8.6, 39.8.0, 40.7.0, 41.0.0-beta.8 or higher.
Overview
electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS.
Affected versions of this package are vulnerable to Hidden Functionality via the commandLineSwitches webPreference. An attacker can inject arbitrary command-line switches into the renderer process by supplying untrusted configuration objects, potentially disabling security controls or sandboxing.
Note:
This is only exploitable if external or untrusted input is used to construct webPreferences without an explicit allowlist.
Workaround
This vulnerability can be mitigated by not spreading untrusted input into webPreferences and by using an explicit allowlist of permitted preference keys when constructing options from external configuration.