VULNERABILITY INTELLIGENCE

CVE-2026-70599

CVSS score5.9 MEDIUM
EPSS probability0.19%
CISA KEVNot currently listed
Published2026-08-05
Last modified2026-10-08
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-346

Primary references