---
id: CVE-2026-70607
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 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3,
  some window options supplied by web content in the window.open() features
  string …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-20
vendor: electron
product: electron
affected:
  - electron < 39.8.8
  - 'electron >= 40.0.0-alpha.1, < 40.9.0'
  - 'electron >= 41.0.0-alpha.1, < 41.2.1'
  - 'electron >= 42.0.0-alpha.1, < 42.0.0-beta.3'
patched:
  - electron 39.8.8
  - electron 40.9.0
  - electron 41.2.1
  - electron 42.0.0-beta.3
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-2026-70607'
references:
  - url: >-
      https://github.com/electron/electron/commit/30cf3882de75ee651bd4e5f27002f13fd3d3163a
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/commit/4eff3dc09e4d1e62d649c5ce9902f532bb7469c7
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/commit/615d62500fc7732d068274b796c49487e652e90b
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/commit/fe2e7d0073949b4593b624b93abf1788f5377e55
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/pull/50946'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/pull/50947'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/pull/50948'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/pull/50949'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/releases/tag/v39.8.8'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/releases/tag/v40.9.0'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/releases/tag/v41.2.1'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/releases/tag/v42.0.0-beta.3'
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/security/advisories/GHSA-v93f-fgjr-hjrj
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-v93f-fgjr-hjrj'
tags:
  - nvd
  - ghsa
  - npm
epss: 0.00441
epssPercentile: 0.37637
aliases:
  - GHSA-v93f-fgjr-hjrj
ecosystem: npm
ingestedAt: '2026-08-05T16:49:29.190Z'
---

## Overview

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, some window options supplied by web content in the window.open() features string were applied to the new BrowserWindow without an allowlist. Untrusted content could set window options it should not control, including options that cause the main process to access attacker-chosen file or network paths, when untrusted content can call window.open() and the app does not override child window options via setWindowOpenHandler or overrideBrowserWindowOptions. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.

## Remediation

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

## Package advisory (CVE-2026-70607)

Affected packages:

- `electron < 39.8.8`
- `electron >= 40.0.0-alpha.1, < 40.9.0`
- `electron >= 41.0.0-alpha.1, < 41.2.1`
- `electron >= 42.0.0-alpha.1, < 42.0.0-beta.3`

Patched in:

- `electron 39.8.8`
- `electron 40.9.0`
- `electron 41.2.1`
- `electron 42.0.0-beta.3`

Source: https://github.com/advisories/GHSA-v93f-fgjr-hjrj