CVE-2026-34781

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

State: Published
Severity: 2.8 Low
Published: Apr 7, 2026
Updated: Apr 8, 2026
Reserved: Mar 30, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	2.8 Low	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L	GitHub_M

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
electronelectron	< 39.8.5Affected >= 40.0.0-alpha.1, < 40.8.5Affected >= 41.0.0-alpha.1, < 41.1.0Affected >= 42.0.0-alpha.1, < 42.0.0-alpha.5Affected

References

https://github.com/electron/electron/security/advisories/GHSA-f37v-82c4-4x64

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