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TI-2026-49326 Aliases CVE-2026-70609GHSA-4f78-qhmw-8j8m

Electron: DevTools JavaScript Injection via Unsanitized Dock State Parameter

Priority LOW 28CWE-116Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.

Summary

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, the mode option of webContents.openDevTools() was not sanitized before use by the DevTools frontend. If an attacker can influence this value, script under their control may run in the DevTools context, which in unsandboxed configurations has access to Node.js, including when untrusted input reaches the mode argument of openDevTools() or untrusted content calls openDevTools() on a webview it embeds. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00532 45th percentileScored 2026-11-07
Fix Fixed electron (electron): 39.8.7, 40.9.0, 41.2.0 +1electron (npm): 39.8.7, 40.9.0, 41.2.0 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
electronelectronbefore 39.8.7; 40.0.0-alpha.1 to before 40.9.0; 41.0.0-alpha.1 to before 41.2.0; 42.0.0-alpha.1 to before 42.0.0-beta.139.8.7, 40.9.0, 41.2.0, 42.0.0-beta.1Patch availableCNA
—electron (npm)before 39.8.739.8.7Patch availableGHSA-4f78-qhmw-8j8m
—electron (npm)40.0.0-alpha.1 to before 40.9.040.9.0Patch availableGHSA-4f78-qhmw-8j8m
—electron (npm)41.0.0-alpha.1 to before 41.2.041.2.0Patch availableGHSA-4f78-qhmw-8j8m
—electron (npm)42.0.0-alpha.1 to before 42.0.0-beta.142.0.0-beta.1Patch availableGHSA-4f78-qhmw-8j8m
  • electron Vendorelectron Affected before 39.8.7; 40.0.0-alpha.1 to before 40.9.0; 41.0.0-alpha.1 to before 41.2.0; 42.0.0-alpha.1 to before 42.0.0-beta.1 Fixed in 39.8.7, 40.9.0, 41.2.0, 42.0.0-beta.1 Patch available CNA
  • electron (npm) Vendor— Affected before 39.8.7 Fixed in 39.8.7 Patch available GHSA-4f78-qhmw-8j8m
  • electron (npm) Vendor— Affected 40.0.0-alpha.1 to before 40.9.0 Fixed in 40.9.0 Patch available GHSA-4f78-qhmw-8j8m
  • electron (npm) Vendor— Affected 41.0.0-alpha.1 to before 41.2.0 Fixed in 41.2.0 Patch available GHSA-4f78-qhmw-8j8m
  • electron (npm) Vendor— Affected 42.0.0-alpha.1 to before 42.0.0-beta.1 Fixed in 42.0.0-beta.1 Patch available GHSA-4f78-qhmw-8j8m

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*before 39.8.7; 40.0.0 to before 40.9.0; 41.0.0 to before 41.2.0VulnerableElectronjs
cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:*42.0.0 alpha1VulnerableElectronjs
cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:*42.0.0 alpha2VulnerableElectronjs
cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:*42.0.0 alpha3VulnerableElectronjs
cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:*42.0.0 alpha4VulnerableElectronjs
cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:*42.0.0 alpha5VulnerableElectronjs
cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:*42.0.0 alpha6VulnerableElectronjs
cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:*42.0.0 beta1VulnerableElectronjs
  • cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* Versions before 39.8.7; 40.0.0 to before 40.9.0; 41.0.0 to before 41.2.0 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:* Versions 42.0.0 alpha1 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:* Versions 42.0.0 alpha2 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:* Versions 42.0.0 alpha3 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:* Versions 42.0.0 alpha4 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:* Versions 42.0.0 alpha5 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:* Versions 42.0.0 alpha6 Vulnerable ·Electronjs
  • cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:* Versions 42.0.0 beta1 Vulnerable ·Electronjs

Remediation

  • Fix · CNA electron (electron) Fixed in 39.8.7, 40.9.0, 41.2.0, 42.0.0-beta.1
  • Fix · GHSA-4f78-qhmw-8j8m electron (npm) Fixed in 39.8.7 Advisory →
  • Fix · GHSA-4f78-qhmw-8j8m electron (npm) Fixed in 40.9.0 Advisory →
  • Fix · GHSA-4f78-qhmw-8j8m electron (npm) Fixed in 41.2.0 Advisory →
  • Fix · GHSA-4f78-qhmw-8j8m electron (npm) Fixed in 42.0.0-beta.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-70609
  2. 2026-10-03 Alias added: GHSA-4f78-qhmw-8j8m

References

Patch 8

Advisory 1

Other 5

  • 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