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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.4 · electronjsNVD modified 2026-10-08 13:53
Affected (CPE criteria) 15
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*cpe: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:*:*