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CVE-2026-70608— Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path

Quick assessment

Affected
electron electron
Exploitation
Public or AI PoC available; prioritize validation
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 39.8.10之前版本、41.10.3之前版本和42.0.1之前版本存在处理逻辑错误漏洞，该漏洞源于新窗口导航在OpenURL路径中未应用iframe沙盒弹窗限制，可能导致沙盒iframe在无用户交互的情况下打开新窗口或触发setWindowOpenHandler。

CVSS 7.2 · High EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 3

VendorProduct Version RangeStatus
electron electron < 39.8.10 affected
>= 40.0.0-alpha.1, < 41.10.3 affected
>= 42.0.0-alpha.1, < 42.0.1 affected
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I. Basic Information for CVE-2026-70608

Vulnerability Information
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Vulnerability Title
Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path
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 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
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 39.8.10之前版本、41.10.3之前版本和42.0.1之前版本存在处理逻辑错误漏洞，该漏洞源于新窗口导航在OpenURL路径中未应用iframe沙盒弹窗限制，可能导致沙盒iframe在无用户交互的情况下打开新窗口或触发setWindowOpenHandler。
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 < 39.8.10 -

II. Public POCs for CVE-2026-70608

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6964 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-70608

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Patches & Fixes for CVE-2026-70608 (6)

Vendor Advisories for CVE-2026-70608 (1)

Vendor Pages for CVE-2026-70608 (3)

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-2026-70611 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
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-693

V. Comments for CVE-2026-70608

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