Disclosure summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 40.10.6, 41.9.1, 42.5.1, and 43.0.0, when a custom protocol handler returned a ProtocolResponse with a url and no session, Electron made the upstream request through defaultSession instead of the session that handled the protocol. A cached response could then be reused across otherwise isolated session partitions. Apps that use ProtocolResponse.url, omit ProtocolResponse.session, and rely on separate sessions to isolate content are affected. This issue is fixed in versions 40.10.6, 41.9.1, 42.5.1, and 43.0.0.
Source-reported weakness categories
CWE-668
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-2026-70606
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":"42.0.0","versionEndIncluding":"42.5.1"} |
| electronjs | electron | 43.0.0 |
| electronjs | electron | 43.0.0 |
| electronjs | electron | 43.0.0 |
| electronjs | electron | 43.0.0 |
| electronjs | electron | 43.0.0 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Vendor Advisory
PUBLISHED 2026-08-05T12:17:04-04:00
MODIFIED 2026-10-08T09:53:45-04:00
INGESTED 2026-10-10T20:25:12-04:00