CVE-2020-4077

moderate-risk

Published 2020-07-07

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.

Do I need to act?

0.44% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.7/10 High

NETWORK / LOW complexity

Affected Products (20)

Electron

Affected Vendors

Electronjs

References (4)

Third Party Advisory https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g

Release Notes https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824

Third Party Advisory https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g

Release Notes https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824

/ 100

moderate-risk

Severity 27/34 · High

Exploitability 2/34 · Minimal

Exposure 20/34 · Moderate