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

Overview

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1, shell.openPath() did not reject paths containing embedded null bytes. Apps that perform string-only validation of file paths, for example checking the file extension, before passing them to shell.openPath() could be bypassed, allowing an attacker-controlled path to open a different file than the one that passed validation. Apps are only affected if they pass paths derived from untrusted input to shell.openPath() and rely on string-based validation without a filesystem check. This issue is fixed in versions 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1.

Affected

• electron < 39.8.6
• electron >= 40.0.0, < 40.9.0
• electron >= 41.0.0, < 41.1.1
• electron = 42.0.0

Remediation

Upgrade past the affected range:

• electron 41.1.1

Package advisory (CVE-2026-70603)

Affected packages:

• electron >= 42.0.0-alpha.1, < 42.0.0-beta.1
• electron >= 41.0.0-alpha.1, < 41.1.1
• electron >= 40.0.0-alpha.1, < 40.9.0
• electron < 39.8.6

Patched in:

• electron 42.0.0-beta.1
• electron 41.1.1
• electron 40.9.0
• electron 39.8.6

Source: https://github.com/advisories/GHSA-5c9j-mhmv-5xgx