Review reviewHigh

CVE-2026-34772

electron

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that allow downloads and programmatically destroy sessions may be vulnerable to a use-after-free. If a session is torn down while a native save-file dialog is open for a download, dismissing the dialog dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not destroy sessions at runtime, or that do not permit downloads, are not affected. This issue has been patched in versions 38.8.6, 39.8....

CVSS: 8.8
EPSS: 0.21%
CISA KEV: Not listed
Published: 2026.04.04

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.21%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: electron
Affected versions: >= < 38.8.6, >= >= 39.0.0-alpha.1, < 39.8.0, >= >= 40.0.0-alpha.1, < 40.7.0, >= >= 41.0.0-alpha.1, < 41.0.0-beta.8, < 38.8.6, >= 39.0.0 < 39.8.0, >= 40.0.0 < 40.7.0, 41.0.0
Fixed versions: 38.8.6, 39.8.0, 40.7.0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that electron and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE: CWE-416