---
id: CVE-2026-70601
title: >-
  Electron is a framework for writing cross-platform desktop applications using
  JavaScript, HTML and CSS
summary: >-
  Electron is a framework for writing cross-platform desktop applications using
  JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5,
  apps that expose Promise-returning functions to web content via contextBridge
  may…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N'
cwe:
  - CWE-693
vendor: electron
product: electron
affected:
  - electron < 39.8.9
  - 'electron >= 40.0.0-alpha.1, < 40.9.2'
  - 'electron >= 41.0.0-alpha.1, < 41.2.2'
  - 'electron >= 42.0.0-alpha.1, < 42.0.0-beta.5'
patched:
  - electron 39.8.9
  - electron 40.9.2
  - electron 41.2.2
  - electron 42.0.0-beta.5
published: '2026-08-05'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:44:08.253'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70601'
references:
  - url: >-
      https://github.com/electron/electron/security/advisories/GHSA-h7rp-cf8h-j98x
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-h7rp-cf8h-j98x'
tags:
  - nvd
  - ghsa
  - npm
epss: 0.003
epssPercentile: 0.20194
aliases:
  - GHSA-h7rp-cf8h-j98x
ecosystem: npm
ingestedAt: '2026-08-05T15:49:00.527Z'
---

## Overview

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5, apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web content could obtain access to the isolated preload world and, through it, every capability the preload script has. In renderers without a sandbox, or with nodeIntegration enabled, this may escalate to Node.js access. Apps are affected if they expose Promise-returning functions via contextBridge, the standard pattern for wrapping ipcRenderer.invoke, in windows that load untrusted content. This issue is fixed in versions 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-70601)

Affected packages:

- `electron < 39.8.9`
- `electron >= 40.0.0-alpha.1, < 40.9.2`
- `electron >= 41.0.0-alpha.1, < 41.2.2`
- `electron >= 42.0.0-alpha.1, < 42.0.0-beta.5`

Patched in:

- `electron 39.8.9`
- `electron 40.9.2`
- `electron 41.2.2`
- `electron 42.0.0-beta.5`

Source: https://github.com/advisories/GHSA-h7rp-cf8h-j98x