CVE-2020-4077

Context isolation bypass via contextBridge in Electron

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.

Category

7.7
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.44%
Vendor Advisory electronjs.org
Affected: electron electron
Published at:
Updated at:

References

Link Tags
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 notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-4077?
CVE-2020-4077 has been scored as a high severity vulnerability.
How to fix CVE-2020-4077?
To fix CVE-2020-4077, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-4077 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-4077 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-4077?
CVE-2020-4077 affects electron electron.
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