VULNERABILITY INTELLIGENCE

CVE-2020-4077

CVSS score7.7 HIGH

EPSS probability1.00%

CISA KEVNot currently listed

Published2020-07-07

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Description

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.

Weakness classification

CWE-501: Trust Boundary Violation

Primary references

security-advisories@github.com — Third Party Advisory
security-advisories@github.com — Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory