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TI-2020-03556 Aliases CVE-2020-4076GHSA-m93v-9qjc-3g79

Context isolation bypass via leaked cross-context objects in Electron

Priority LOW 39CWE-501Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

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 contextIsolation are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

Why it matters now

EPSS 0.00367 30th percentileScored 2026-11-07
Fix Fixed electron (electron): 8.2.4, 7.2.4electron (npm): 7.2.4, 8.2.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
electronelectron9.0.0-beta.0 – 9.0.0-beta.20; 8.0.0 to before 8.2.4; before 7.2.48.2.4, 7.2.4Patch availableCNA
—electron (npm)before 7.2.47.2.4Patch availableGHSA-m93v-9qjc-3g79
—electron (npm)8.0.0 to before 8.2.48.2.4Patch availableGHSA-m93v-9qjc-3g79
  • electron Vendorelectron Affected 9.0.0-beta.0 – 9.0.0-beta.20; 8.0.0 to before 8.2.4; before 7.2.4 Fixed in 8.2.4, 7.2.4 Patch available CNA
  • electron (npm) Vendor— Affected before 7.2.4 Fixed in 7.2.4 Patch available GHSA-m93v-9qjc-3g79
  • electron (npm) Vendor— Affected 8.0.0 to before 8.2.4 Fixed in 8.2.4 Patch available GHSA-m93v-9qjc-3g79

CPE configurations NVD · 22

CPEVersionsRoleVendor
cpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*7.0.0 to before 7.2.4; 8.0.0 to before 8.2.4VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:-:*:*:*:*:*:*9.0.0VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta1:*:*:*:*:*:*9.0.0 beta1VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta10:*:*:*:*:*:*9.0.0 beta10VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta11:*:*:*:*:*:*9.0.0 beta11VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta12:*:*:*:*:*:*9.0.0 beta12VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta13:*:*:*:*:*:*9.0.0 beta13VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta14:*:*:*:*:*:*9.0.0 beta14VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta15:*:*:*:*:*:*9.0.0 beta15VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta16:*:*:*:*:*:*9.0.0 beta16VulnerableElectronjs
  • cpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.2.4; 8.0.0 to before 8.2.4 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:-:*:*:*:*:*:* Versions 9.0.0 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta1:*:*:*:*:*:* Versions 9.0.0 beta1 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta10:*:*:*:*:*:* Versions 9.0.0 beta10 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta11:*:*:*:*:*:* Versions 9.0.0 beta11 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta12:*:*:*:*:*:* Versions 9.0.0 beta12 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta13:*:*:*:*:*:* Versions 9.0.0 beta13 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta14:*:*:*:*:*:* Versions 9.0.0 beta14 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta15:*:*:*:*:*:* Versions 9.0.0 beta15 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta16:*:*:*:*:*:* Versions 9.0.0 beta16 Vulnerable ·Electronjs
Show 12 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:electronjs:electron:9.0.0:beta17:*:*:*:*:*:*9.0.0 beta17VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta18:*:*:*:*:*:*9.0.0 beta18VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta19:*:*:*:*:*:*9.0.0 beta19VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta2:*:*:*:*:*:*9.0.0 beta2VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta20:*:*:*:*:*:*9.0.0 beta20VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta3:*:*:*:*:*:*9.0.0 beta3VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta4:*:*:*:*:*:*9.0.0 beta4VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta5:*:*:*:*:*:*9.0.0 beta5VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta6:*:*:*:*:*:*9.0.0 beta6VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta7:*:*:*:*:*:*9.0.0 beta7VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta8:*:*:*:*:*:*9.0.0 beta8VulnerableElectronjs
cpe:2.3:a:electronjs:electron:9.0.0:beta9:*:*:*:*:*:*9.0.0 beta9VulnerableElectronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta17:*:*:*:*:*:* Versions 9.0.0 beta17 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta18:*:*:*:*:*:* Versions 9.0.0 beta18 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta19:*:*:*:*:*:* Versions 9.0.0 beta19 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta2:*:*:*:*:*:* Versions 9.0.0 beta2 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta20:*:*:*:*:*:* Versions 9.0.0 beta20 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta3:*:*:*:*:*:* Versions 9.0.0 beta3 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta4:*:*:*:*:*:* Versions 9.0.0 beta4 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta5:*:*:*:*:*:* Versions 9.0.0 beta5 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta6:*:*:*:*:*:* Versions 9.0.0 beta6 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta7:*:*:*:*:*:* Versions 9.0.0 beta7 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta8:*:*:*:*:*:* Versions 9.0.0 beta8 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:9.0.0:beta9:*:*:*:*:*:* Versions 9.0.0 beta9 Vulnerable ·Electronjs

Remediation

  • Fix · CNA electron (electron) Fixed in 8.2.4, 7.2.4
  • Fix · GHSA-m93v-9qjc-3g79 electron (npm) Fixed in 7.2.4 Advisory →
  • Fix · GHSA-m93v-9qjc-3g79 electron (npm) Fixed in 8.2.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-4076
  2. 2026-10-03 Alias added: GHSA-m93v-9qjc-3g79

References

Advisory 3

  • TI-2026-39496 Information disclosure in electron-builder CVSS 4.0HIGH 8.2
  • TI-2024-26621 Code Signing Bypass on Windows in electron-updater < 6.3.0-alpha.6 CVSS 3.1HIGH 7.5
  • TI-2023-09452 Content-Secrity-Policy disabling eval not applied consistently in renderers with sandbox disabled in Electron CVSS 3.1CRITICAL 9.8
  • TI-2026-39157 Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow CVSS 4.0CRITICAL 9.3
  • TI-2017-09308 GitHub Electron before 1.6.8 allows remote command execution because of a nodeIntegration… CVSS 3.0HIGH 8.1
  • TI-2022-11788 Exposure of Resource to Wrong Sphere in Electron CVSS 3.1CRITICAL 9.8
See all 74 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences