CVE-2026-70599

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, serial-port and media permission checks made from an iframe passed the top-level frame origin to session.setPermissionCheckHandler instead of the requesting iframe origin. Origin-based handler logic could grant a cross-origin iframe device access intended only for the top-level origin. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.

CVSS Vector

References

• https://github.com/electron/electron/commit/0cbdf2f0375466d701aa393c92e0ec29eb89ea6c
• https://github.com/electron/electron/security/advisories/GHSA-9pf5-hg6p-4pwp