CVE-2026-70604
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0.
- CVSS 3.1
- 7.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N - EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)
- CWE
- CWE-942
- Published
- Modified
- Record from
- the NVD, synced
Affected
- electronjs:electron
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v3j7-r9gq-3gjw | npm | electron | >=42.0.0-alpha.1 <42.0.0 | 42.0.0 |
| GHSA-v3j7-r9gq-3gjw | npm | electron | >=41.0.0-alpha.1 <41.4.0 | 41.4.0 |
| GHSA-v3j7-r9gq-3gjw | npm | electron | >=40.0.0-alpha.1 <40.9.3 | 40.9.3 |
| GHSA-v3j7-r9gq-3gjw | npm | electron | <39.8.10 | 39.8.10 |