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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
electron electron affected
Version Status Constraints
< 39.8.7 affected —
>= 40.0.0-alpha.1, < 40.9.0 affected —
>= 41.0.0-alpha.1, < 41.2.0 affected —
>= 42.0.0-alpha.1, < 42.0.0-beta.1 affected —

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Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-4f78-qhmw-8j8m Electron: DevTools JavaScript Injection via Unsanitized Dock State Parameter
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/electron/electron/commit/04614eed17986bddc43eb509ec870424ee6a47d1 cve-icon
https://github.com/electron/electron/commit/2046ae87731d80a7b535512ae19acb529e10e33b cve-icon
https://github.com/electron/electron/commit/969741f9f847c5c583f6bbc63ca22549dbd954ce cve-icon
https://github.com/electron/electron/commit/efc4d3c6b6f1c04f658ca0d9d2512dcfe78eb7ba cve-icon
https://github.com/electron/electron/pull/50665 cve-icon
https://github.com/electron/electron/pull/50666 cve-icon
https://github.com/electron/electron/pull/50667 cve-icon
https://github.com/electron/electron/pull/50668 cve-icon
https://github.com/electron/electron/releases/tag/v39.8.7 cve-icon
https://github.com/electron/electron/releases/tag/v40.9.0 cve-icon
https://github.com/electron/electron/releases/tag/v41.2.0 cve-icon
https://github.com/electron/electron/releases/tag/v42.0.0-beta.1 cve-icon
https://github.com/electron/electron/security/advisories/GHSA-4f78-qhmw-8j8m cve-icon
History

Wed, 05 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Electron: DevTools JavaScript Injection via Unsanitized Dock State Parameter
Weaknesses CWE-116
CWE-94
References
Metrics cvssV3_1

{'score': 5.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-05T17:32:21.067Z

Reserved: 2026-08-04T19:50:27.329Z

Link: CVE-2026-70609

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses