CVE-2026-34772

MEDIUM

Electron: Use-after-free in download save dialog callback

Title source: cna
STIX 2.1

Description

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.

Scores

CVSS v3 5.8
EPSS 0.0001
EPSS Percentile 2.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-416
Status published
Products (7)
electron/electron < 38.8.6
electron/electron >= 39.0.0-alpha.1, < 39.8.0
electron/electron >= 40.0.0-alpha.1, < 40.7.0
electron/electron >= 41.0.0-alpha.1, < 41.0.0-beta.8
electronjs/electron 41.0.0 alpha1 (13 CPE variants)
electronjs/electron < 38.8.6
npm/electron 0 - 38.8.6npm
Published Apr 04, 2026
Tracked Since Apr 04, 2026