NULL pointer dereference in Electron

CVE-2026-34781

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 2.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.001 (3.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-34781: held from 0.001 to 0.001.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: -0.000

Affected products

  • Electron — versions < 39.8.5, >= 40.0.0-alpha.1, < 40.8.5, >= 41.0.0-alpha.1, < 41.1.0
  • Electronjs Electron — versions 41.2.0, 42.0.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-34781?
CVE-2026-34781 is a low-severity vulnerability in Electron, classified under NULL Pointer Dereference. CVSS score: 2.8/10. Published 2026-04-07.
How severe is CVE-2026-34781?
Low severity. CVSS v3 base score is 2.8 out of 10.