Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-34771

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
04/04/2026
Last modified:
22/04/2026

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 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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* 38.8.6 (excluding)
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* 39.0.0 (including) 39.8.0 (excluding)
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* 40.0.0 (including) 40.7.0 (excluding)
cpe:2.3:a:electronjs:electron:41.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta6:*:*:*:node.js:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools