Electron: Context isolation bypass via Function.prototype.bind hijack

Impact Apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web content could obtain access to the isolated preload world and, through it, every capability the preload script has. In renderers without a sandbox, o...

CVE-2026-70601 Electron: Context isolation bypass via Function.prototype.bind hijack

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5, apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web...

CVE-2026-70601 Electron: Context isolation bypass via Function.prototype.bind hijack

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5, apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web...

CVE-2026-70601

CVE-2026-70601 affects Electron, a framework for building cross‑platform desktop apps with JavaScript/HTML/CSS. The issue arises when apps expose Promise‑returning functions to web content via contextBridge, allowing a context isolation bypass. In environments where a sandbox is absent or nodeInt...