CVE-2026-34781 LOW

CVE-2026-34781: Electron crashes in clipboard.readImage() on malformed clipboard image data

Vendor Electron
Product electron
Weakness CWE-476
Published April 7, 2026
Last update April 8, 2026

CVSS base score

2.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, apps that call clipboard.readImage() may be vulnerable to a denial of service. If the system clipboard contains image data that fails to decode, the resulting null bitmap is passed unchecked to image construction, triggering a controlled abort and crashing the process. Apps are only affected if they call clipboard.readImage(). Apps that do not read images from the clipboard are not affected. This issue does not allow memory corruption or code execution. This vulnerability is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 8, 2026 Record updated