Disclosure summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could cause an OS-registered external application to be launched. The frame sandbox state was also not made available to the app permission handlers, affecting apps that render untrusted content in sandboxed iframes and grant the openExternal permission by default when no setPermissionRequestHandler is installed. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Source-reported weakness categories
CWE-284
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-70612
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| electronjs | electron | * {"versionStartIncluding":"41.0.0","versionEndIncluding":"41.2.1"} |
| electronjs | electron | 42.0.0 |
| electronjs | electron | 42.0.0 |
| electronjs | electron | 42.0.0 |
| electronjs | electron | 42.0.0 |
| electronjs | electron | 42.0.0 |
| electronjs | electron | 42.0.0 |
| electronjs | electron | 42.0.0 |
| electronjs | electron | 42.0.0 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Patch
- github.com — Patch
- github.com — Patch
- github.com — Patch
- github.com — Issue Tracking, Patch
- github.com — Issue Tracking, Patch
- github.com — Issue Tracking, Patch
- github.com — Issue Tracking, Patch
- github.com — Release Notes
- github.com — Release Notes
- github.com — Release Notes
- github.com — Release Notes
- github.com — Vendor Advisory, Mitigation
PUBLISHED 2026-08-05T15:17:41-04:00
MODIFIED 2026-10-08T09:49:00-04:00
INGESTED 2026-10-10T20:25:12-04:00