---
id: CVE-2026-102672
aliases:
  - GHSA-vv43-5jgx-7qv8
title: 'Electron: Local race condition in Squirrel.Mac update installation on macOS'
summary: 'Electron: Local race condition in Squirrel.Mac update installation on macOS'
severity: medium
cvss: 6.7
cwe:
  - CWE-367
vendor: electron
product: electron
ecosystem: npm
affected:
  - electron < 39.8.10
  - 'electron >= 40.0.0-alpha.1, < 41.10.5'
  - 'electron >= 42.0.0-alpha.1, < 42.0.0-beta.2'
patched:
  - electron 39.8.10
  - electron 41.10.5
  - electron 42.0.0-beta.2
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T18:07:01Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-vv43-5jgx-7qv8'
references:
  - url: >-
      https://github.com/electron/electron/security/advisories/GHSA-vv43-5jgx-7qv8
  - url: 'https://github.com/electron/electron/pull/50745'
  - url: >-
      https://github.com/electron/electron/commit/01faabfc250801a980fc94d64608046c67fc1cd9
  - url: >-
      https://github.com/electron/electron/commit/15e2928a5c5f01759107b414010e220d90d59cef
  - url: >-
      https://github.com/electron/electron/commit/a0f9ff4cc0340545008424232d49caadd9c0c767
  - url: >-
      https://github.com/electron/electron/commit/b8f25c4cedb2e0f5f475912b709aba19c57c26be
  - url: 'https://github.com/electron/electron/releases/tag/v39.8.10'
  - url: 'https://github.com/electron/electron/releases/tag/v41.10.5'
  - url: 'https://github.com/electron/electron/releases/tag/v42.0.0-beta.2'
  - url: 'https://github.com/advisories/GHSA-vv43-5jgx-7qv8'
tags:
  - ghsa
  - npm
ingestedAt: '2026-09-29T18:42:35.832Z'
---

## Overview

### Impact

On macOS, Electron bundles the Squirrel.Mac auto-update framework, whose privileged `ShipIt` helper performs the final step of an update as root. A local attacker could cause that helper to overwrite a different application's files, as root, instead of the app that started the update. Exploitation requires local access to the machine.

Apps are only affected on macOS if they ship Squirrel.Mac-based auto-updates. Apps on other platforms, or that do not use Squirrel.Mac auto-updates, are not affected.

### Workarounds

There are no app side workarounds, you must update to a patched version of Electron.

### Fixed Versions

* `42.0.0-beta.2`
* `41.10.5`
* `39.8.10`

### For more information

If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)

## Affected packages

- `electron < 39.8.10`
- `electron >= 40.0.0-alpha.1, < 41.10.5`
- `electron >= 42.0.0-alpha.1, < 42.0.0-beta.2`

## Remediation

Upgrade to a patched release:

- `electron 39.8.10`
- `electron 41.10.5`
- `electron 42.0.0-beta.2`