CVE-2026-34772 MEDIUM

CVE-2026-34772: Electron: Use-after-free in download save dialog callback

Vendor Electron
Product electron
Weakness CWE-416
Published April 3, 2026
Last update April 6, 2026

CVSS base score

5.8/10
Attack vector Local
Attack complexity High
Privileges required None
User interaction Required
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L

What the vulnerability does

01Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that allow downloads and programmatically destroy sessions may be vulnerable to a use-after-free. If a session is torn down while a native save-file dialog is open for a download, dismissing the dialog dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not destroy sessions at runtime, or that do not permit downloads, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.

Key dates

02Disclosure timeline

April 3, 2026 CVE published
April 6, 2026 Record updated