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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-942"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70604.json"
}{
"cpe": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "39.8.10"
},
{
"introduced": "40.0.0"
},
{
"fixed": "40.9.3"
},
{
"introduced": "41.0.0"
},
{
"fixed": "41.4.0"
}
],
"source": "CPE_RANGE"
}