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CVE-2026-34780— Electron: Context Isolation bypass via contextBridge VideoFrame transfer

Quick assessment

Affected
electron electron
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Electron是Electron开源的一个用户编写跨平台桌面应用的 JavaScript 框架。该框架基于 nodejs 和 Chromium 可以使用HTML，CSS实现跨平台桌面应用的编写。 Electron 39.0.0-alpha.1至39.8.0之前版本、40.0.0-alpha.1至40.7.0之前版本和41.0.0-alpha.1至41.0.0-beta.8之前版本存在安全漏洞，该漏洞源于通过contextBridge传递VideoFrame对象时存在上下文隔离绕过问题，可能导致访问隔离环

CVSS 8.4 · High EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 3

VendorProduct Version RangeStatus
electron electron >= 39.0.0-alpha.1, < 39.8.0 affected
>= 40.0.0-alpha.1, < 40.7.0 affected
>= 41.0.0-alpha.1, < 41.0.0-beta.8 affected
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I. Basic Information for CVE-2026-34780

Vulnerability Information
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Vulnerability Title
Electron: Context Isolation bypass via contextBridge VideoFrame transfer
Source: CVE Program / CVE List V5
Vulnerability Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From versions 39.0.0-alpha.1 to before 39.8.0, 40.0.0-alpha.1 to before 40.7.0, and 41.0.0-alpha.1 to before 41.0.0-beta.8, apps that pass VideoFrame objects (from the WebCodecs API) across the contextBridge are vulnerable to a context isolation bypass. An attacker who can execute JavaScript in the main world (for example, via XSS) can use a bridged VideoFrame to gain access to the isolated world, including any Node.js APIs exposed to the preload script. Apps are only affected if a preload script returns, resolves, or passes a VideoFrame object to the main world via contextBridge.exposeInMainWorld(). Apps that do not bridge VideoFrame objects are not affected. This issue has been patched in versions 39.8.0, 40.7.0, and 41.0.0-beta.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
将资源暴露给错误范围
Source: CVE Program / CVE List V5
Vulnerability Title
Electron 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Electron是Electron开源的一个用户编写跨平台桌面应用的 JavaScript 框架。该框架基于 nodejs 和 Chromium 可以使用HTML，CSS实现跨平台桌面应用的编写。 Electron 39.0.0-alpha.1至39.8.0之前版本、40.0.0-alpha.1至40.7.0之前版本和41.0.0-alpha.1至41.0.0-beta.8之前版本存在安全漏洞，该漏洞源于通过contextBridge传递VideoFrame对象时存在上下文隔离绕过问题，可能导致访问隔离环
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
electron electron >= 39.0.0-alpha.1, < 39.8.0 -

II. Public POCs for CVE-2026-34780

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III. Intelligence Information for CVE-2026-34780

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Vendor Advisories for CVE-2026-34780 (1)

IV. Related Vulnerabilities

Same product: electron
Same vendor: electron
Same weakness: CWE-668

V. Comments for CVE-2026-34780

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