CVE-2026-34781

LOW

Electron crashes in clipboard.readImage() on malformed clipboard image data

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 2.8
EPSS 0.0014
EPSS Percentile 4.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-476
Status published
Products (8)
electron/electron < 39.8.5
electron/electron >= 40.0.0-alpha.1, < 40.8.5
electron/electron >= 41.0.0-alpha.1, < 41.1.0
electron/electron >= 42.0.0-alpha.1, < 42.0.0-alpha.5
electronjs/electron 41.2.0
electronjs/electron 42.0.0 alpha1 (4 CPE variants)
electronjs/electron < 39.8.4
npm/electron 0 - 39.8.5npm
Published Apr 07, 2026
Tracked Since Apr 08, 2026