CVE-2020-4077: Electronjs Electron

Critical severity, CVSS 9.9. EPSS: 1% chance of exploitation in the next 30 days.

In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both `contextIsolation` and `contextBridge` are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

Affected products

• Electronjs Electron: from 7.0.0, before 7.2.4 (fixed in 7.2.4); from 8.0.0, before 8.2.4 (fixed in 8.2.4); version 9.0.0 only

Published 2020-07-07. Last modified 2026-06-17.