CVE-2020-4077 - CVE House
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Status published High CVE-2020-4077

Context isolation bypass via contextBridge in Electron

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

electron
Vulnerable Versions:
>= 9.0.0-beta.0, <= 9.0.0-beta.20, >= 8.0.0, < 8.2.4, < 7.2.4

Timeline

Official Publish: July 7th, 2020
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Weaknesses (CWE)

CWE-501

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.