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CVE-2026-70600— Electron: Cross-origin iframe can position native autofill popup

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 39.8.8之前版本、40.9.0之前版本、41.2.1之前版本和42.0.0-beta.3之前版本存在处理逻辑错误漏洞，该漏洞源于原生自动填充弹出窗口可被跨源iframe定位到该iframe边界之外并覆盖嵌入页面的UI，可能导致点击劫持或伪造可信UI。

CVSS 3.1 · Low EPSS 0.22% · P11

Affected Version Matrix 4

VendorProduct Version RangeStatus
electron electron < 39.8.8 affected
>= 40.0.0-alpha.1, < 40.9.0 affected
>= 41.0.0-alpha.1, < 41.2.1 affected
>= 42.0.0-alpha.1, < 42.0.0-beta.3 affected
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I. Basic Information for CVE-2026-70600

Vulnerability Information
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Vulnerability Title
Electron: Cross-origin iframe can position native autofill popup
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 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, the native autofill popup could be positioned by a cross-origin iframe outside that iframe's bounds, over the embedding page's UI, enabling clickjacking or spoofing of trusted UI. Apps are only affected if they embed untrusted content in iframes within windows that also display trusted UI. Apps that do not embed untrusted third-party content are not affected. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不当限制渲染UI层或帧
Source: CVE Program / CVE List V5
Vulnerability Title
Electron 处理逻辑错误漏洞
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 39.8.8之前版本、40.9.0之前版本、41.2.1之前版本和42.0.0-beta.3之前版本存在处理逻辑错误漏洞，该漏洞源于原生自动填充弹出窗口可被跨源iframe定位到该iframe边界之外并覆盖嵌入页面的UI，可能导致点击劫持或伪造可信UI。
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 < 39.8.8 -

II. Public POCs for CVE-2026-70600

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III. Intelligence Information for CVE-2026-70600

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Vendor Advisories for CVE-2026-70600 (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-2026-70599 5.9 MEDIUM Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe
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

IV. Related Vulnerabilities

Same product: electron
Same vendor: electron
Same weakness: CWE-1021

V. Comments for CVE-2026-70600

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