CVE-2026-70602
CVE-2026-70602 · Electron: Extension tab APIs operate across session boundaries
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, extension tab and scripting APIs were not scoped to the extension's own session. A malicious or compromised extension loaded into one session could navigate, script, and read from windows belonging to a different session. Apps are only affected if they load Chrome extensions via session.loadExtension and rely on separate sessions to isolate that extension from other content. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
CVSS 6.6 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
electron
- Versions
- < 39.8.8: Affected
- >= 40.0.0-alpha.1, < 40.9.0: Affected
- >= 41.0.0-alpha.1, < 41.2.1: Affected
- >= 42.0.0-alpha.1, < 42.0.0-beta.3: Affected
No fix published
electron npm
- Affected ranges
- SEMVER: < 39.8.8
Update to 39.8.8
electron npm
- Affected ranges
- SEMVER: ≥ 40.0.0-alpha.1, < 40.9.0
Update to 40.9.0
electron npm
- Affected ranges
- SEMVER: ≥ 41.0.0-alpha.1, < 41.2.1
Update to 41.2.1
electron npm
- Affected ranges
- SEMVER: ≥ 42.0.0-alpha.1, < 42.0.0-beta.3
Update to 42.0.0-beta.3