What’s Vulnerable › Vulnerabilities

CVE-2020-15096: Context isolation bypass via Promise in Electron

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-07 · updated 2026-06-17
• Weakness: CWE-501

Description

In Electron before versions 6.1.1, 7.2.4, 8.2.4, and 9.0.0-beta21, there 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. Apps using "contextIsolation" are affected. There are no app-side workarounds, you must update your Electron version to be protected. This is fixed in versions 6.1.1, 7.2.4, 8.2.4, and 9.0.0-beta21.

Affected products

• electron: before 6.1.1; from 7.0.0 before 7.2.4; from 8.0.0 before 8.2.4; 9.0.0, 9.0.0-beta1, 9.0.0-beta10, 9.0.0-beta11, 9.0.0-beta12, 9.0.0-beta13 (+15) — fixed in 6.1.1, 7.2.4, 8.2.4

How to fix

Upgrade to a fixed version: electron 6.1.1, 7.2.4, 8.2.4. Check the vendor advisory for mitigations.

References

• https://github.com/electron/electron/security/advisories/GHSA-6vrv-94jv-crrg
• https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824
• https://github.com/electron/electron/security/advisories/GHSA-6vrv-94jv-crrg
• https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824

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