CVE-2026-34771

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 register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, 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.

Affected products

Electron

Electronjs Electron

< 38.8.6, 39.8.0, 40.7.0, 41.0.0

Fix

Available

CVSS 3.1

8.8 HIGH

EPSS

0.3% (21th percentile)

Weakness

CWE-364, CWE-416

NVD status

Modified

Published

2026-04-03

No exploit for CVE-2026-34771 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.