CVE-2020-4076
Context isolation bypass via leaked cross-context objects in Electron
Description
### Impact Apps using `contextIsolation` are affected. This is a context isolation bypass, meaning that code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. ### Workarounds There are no app-side workarounds, you must update your Electron version to be protected. ### Fixed Versions * `9.0.0-beta.21` * `8.2.4` * `7.2.4` ### Non-Impacted Versions * `9.0.0-beta.*` ### For more information If you have any questions or comments about this advisory: * Email us at [security@electronjs.org](mailto:security@electronjs.org)
How to fix CVE-2020-4076
To remediate CVE-2020-4076, upgrade the affected package to a fixed version below.
- —upgrade to 7.2.4 or later
Is CVE-2020-4076 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 7.2.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N |