Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M

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

Low 2.8

In plain English

A low-severity null pointer dereference in electron from electron. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)2.8Low

Exploit odds (30 days)0.1%top 95.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	electron	39.8.5	GHSA-f37v-82c4-4x64
npm	electron	40.8.5	GHSA-f37v-82c4-4x64
npm	electron	41.1.0	GHSA-f37v-82c4-4x64
npm	electron	42.0.0-alpha.5	GHSA-f37v-82c4-4x64

Affected products (as reported)

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

Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

References

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