---
id: CVE-2026-102677
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. From 42.3.3 until 42.10.0, 43.5.0, and
  44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a
  cached entry matc…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-20
  - CWE-345
  - CWE-829
vendor: electronjs
product: electron
affected:
  - 'electron >= 42.3.3, <= 42.10.0'
  - 'electron >= 43.0.0, < 43.4.2'
  - electron = 44.0.0
patched:
  - electron 43.4.2
published: '2026-09-29'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T20:24:30.737'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102677'
references:
  - url: >-
      https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/pull/52480'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/releases/tag/v42.10.0'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/releases/tag/v43.5.0'
    label: security-advisories@github.com
  - url: 'https://github.com/electron/electron/releases/tag/v44.0.0-beta.6'
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq
    label: security-advisories@github.com
  - url: >-
      https://github.com/electron/electron/commit/06a12a87a23f40abbf580fc7a552bc1189812c45
  - url: 'https://github.com/advisories/GHSA-qmv3-fv6v-rmhq'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102677.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-102677'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2543491'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-102677'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102677'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
  - csaf
  - vex
  - red-hat
epss: 0.00099
epssPercentile: 0.00808
aliases:
  - GHSA-qmv3-fv6v-rmhq
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-02T12:18:07.959498Z'
ingestedAt: '2026-09-29T18:42:35.812Z'
---

## Overview

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.

## Affected

- `electron >= 42.3.3, <= 42.10.0`
- `electron >= 43.0.0, < 43.4.2`
- `electron = 44.0.0`

## Remediation

Upgrade past the affected range:

- `electron 43.4.2`

## Package advisory (CVE-2026-102677)

Affected packages:

- `electron >= 42.3.3, < 42.10.0`
- `electron >= 43.0.0-beta.1, < 43.5.0`
- `electron >= 44.0.0-alpha.1, < 44.0.0-beta.6`

Patched in:

- `electron 42.10.0`
- `electron 43.5.0`
- `electron 44.0.0-beta.6`

Source: https://github.com/advisories/GHSA-qmv3-fv6v-rmhq

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Build of Podman Desktop · no fix planned: Red Hat Build of Podman Desktop · updated 2026-09-30 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102677.json)