Critical severity · published Jul 7, 2020
CVE-2020-4077
In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass
9.9
CVSS
1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Electron · Electronjs
7.0.0 before 7.2.4; 8.0.0 before 8.2.4; 9.0.0; 9.0.0; 9.0.0; 9.0.0; +17 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-4077
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-4077
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
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