High 8.1Published Apr 4, 2026

CVE-2026-34774Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.

Updated under an hour ago (2026-10-19 06:25 UTC)

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It affects electronjs electron. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 39.8.1, 40.7.0, and 41.0.0, apps that use offscreen rendering and allow child windows via window.open() may be vulnerable to a use-after-free. If the parent offscreen WebContents is destroyed while a child window remains open, subsequent paint frames on the child dereference freed memory, which may lead to a crash or memory corruption. Apps are only affected if they use offscreen rendering (webPreferences.offscreen: true) and their setWindowOpenHandler permits child windows. Apps that do not use offscreen rendering, or that deny child windows, are not affected. This issue has been patched in versions 39.8.1, 40.7.0, and 41.0.0.

CVSS: 8.1 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416, CWE-825
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

electronjs electron electronjs:electron	before 39.8.1; from 40.0.0 before 40.7.0; 41.0.0; 41.0.0; 41.0.0; 41.0.0; 41.0.0; 41.0.0; and 8 more ranges	NVD

References

https://github.com/electron/electron/security/advisories/GHSA-532v-xpq5-8h95vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-34774
https://bugzilla.redhat.com/show_bug.cgi?id=2455026
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34774.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.