NPM: Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads

NPM: Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads vulnerability discovered by ? in WordPress Npm electron versions 39.8.10...

Permissive Cross-domain Policy with Untrusted Domains

Overview electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS. Affected versions of this package are vulnerable to Permissive Cross-domain Policy with Untrusted Domains via the custom protocol handler when supportFetchAPI is enabled but...

CVE-2026-70604 Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads

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 remot...