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CVE-2026-70599— Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin

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组织开源的一个跨平台的桌面应用开发框架。 Electron 39.8.7之前版本、40.9.0之前版本、41.2.0之前版本和42.0.0-beta.1之前版本存在输入验证错误漏洞，该漏洞源于iframe进行的串行端口和媒体权限检查将顶层框架来源传递给session.setPermissionCheckHandler而非请求iframe来源，导致基于来源的处理程序逻辑可能向跨域iframe授予仅用于顶层来源的设备访问权限。

CVSS 5.9 · Medium EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1562

Affected Version Matrix 4

VendorProduct Version RangeStatus
electron electron < 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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I. Basic Information for CVE-2026-70599

Vulnerability Information
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Vulnerability Title
Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin
Source: CVE Program / CVE List V5
Vulnerability 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, serial-port and media permission checks made from an iframe passed the top-level frame origin to session.setPermissionCheckHandler instead of the requesting iframe origin. Origin-based handler logic could grant a cross-origin iframe device access intended only for the top-level origin. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5
Vulnerability Title
Electron 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Electron是Electron组织开源的一个跨平台的桌面应用开发框架。 Electron 39.8.7之前版本、40.9.0之前版本、41.2.0之前版本和42.0.0-beta.1之前版本存在输入验证错误漏洞，该漏洞源于iframe进行的串行端口和媒体权限检查将顶层框架来源传递给session.setPermissionCheckHandler而非请求iframe来源，导致基于来源的处理程序逻辑可能向跨域iframe授予仅用于顶层来源的设备访问权限。
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 < 39.8.7 -

II. Public POCs for CVE-2026-70599

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III. Intelligence Information for CVE-2026-70599

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Patches & Fixes for CVE-2026-70599 (1)

Vendor Advisories for CVE-2026-70599 (1)

Same Patch Batch · electron · 2026-08-05 · 16 CVEs total

CVE-2026-70601 7.5 HIGH Electron: Context isolation bypass via Function.prototype.bind hijack
CVE-2026-70604 7.4 HIGH Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin rea
CVE-2026-70608 7.2 HIGH Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigat
CVE-2026-70611 6.9 MEDIUM Electron: DevTools embedder handler executes arbitrary files via shell open
CVE-2026-70602 6.6 MEDIUM Electron: Extension tab APIs operate across session boundaries
CVE-2026-70597 6.3 MEDIUM Electron: Parent process code-sign check is spoofable
CVE-2026-70603 6.0 MEDIUM Electron: shell.openPath path validation bypass via embedded null byte
CVE-2026-70605 5.9 MEDIUM Electron: HTTP redirect followed into local file loader
CVE-2026-70606 5.9 MEDIUM Electron: ProtocolResponse.url reuses the default session cache instead of the registering
CVE-2026-70609 5.7 MEDIUM Electron: DevTools JavaScript Injection via Unsanitized Dock State Parameter
CVE-2026-70610 5.4 MEDIUM Electron: contextBridge object copy honors prototype setters
CVE-2026-70612 5.4 MEDIUM Electron: Sandboxed iframes can launch external protocol handlers
CVE-2026-70607 5.3 MEDIUM Electron: window.open features string controls some window options considered privileged
CVE-2026-70598 3.9 LOW Electron: Off-screen rendering trusts GPU-supplied geometry over shared-memory size
CVE-2026-70600 3.1 LOW Electron: Cross-origin iframe can position native autofill popup

IV. Related Vulnerabilities

Same product: electron
Same vendor: electron
Same weakness: CWE-346

V. Comments for CVE-2026-70599

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