CVEvulnerability

CVE-2026-34774

8.1 HIGH Published 2026-04-04 Modified 2026-07-24 Official page ↗
Status
Modified
Published
2026-04-04
Last modified
2026-07-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416, CWE-825

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 39.8.1, 40.7.0, and 41.0.0, apps that use offscreen rendering and allow child windows via window.open() may be vulnerable to a use-after-free. If the parent offscreen WebContents is destroyed while a child window remains open, subsequent paint frames on the child dereference freed memory, which may lead to a crash or memory corruption. Apps are only affected if they use offscreen rendering (webPreferences.offscreen: true) and their setWindowOpenHandler permits child windows. Apps that do not use offscreen rendering, or that deny child windows, are not affected. This issue has been patched in versions 39.8.1, 40.7.0, and 41.0.0.

Affected configurations

• electronjs electron (< 39.8.1) • electronjs electron (>= 40.0.0 < 40.7.0) • electronjs electron 41.0.0

Related

Weakness · CWE (2)

  • CWE-416 Use After Free weakness
  • CWE-825 Expired Pointer Dereference weakness

References