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Vulnerability record · CVE-2020-4077 · published 7 July 2020

CVE-2020-4077: Electronjs electron vulnerability

Electronjs · Electron

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.

9.9 CVSS 3.1 Critical EPSS 1.0% · top 38.5% CWE-501 · CWE-501
9.9CVSS 3.1 base score, v2 6.5
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g Third Party Advisory
https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824 Release NotesVendor Advisory
https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g Third Party Advisory
https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824 Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-4077), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.