Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads (electron electron)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.35 % · percentile 29 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
Description
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.
Weaknesses (CWE)
- CWE-942 — Permissive Cross-domain Security Policy with Untrusted Domains
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N | GitHub_M |
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-v3j7-r9gq-3gjw — Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads
European references
- ENISA EUVD · EUVD-2026-53440
- GCVE · GCVE-0-2026-70604
Affected configurations (NVD CPE)
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*< 39.8.10cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 40.0.0 < 40.9.3cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 41.0.0 < 41.4.0cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta7:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta8:*:*:*:node.js:*:*
Affected products
| Product | Versions |
|---|---|
| electron · electron | affected < 39.8.10 ; affected >= 40.0.0-alpha.1, < 40.9.3 ; affected >= 41.0.0-alpha.1, < 41.4.0 ; affected >= 42.0.0-alpha.1, < 42.0.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |