Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path

Impact A sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction, because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in...

EUVD-2026-53564

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because...