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CVE-2026-102673— Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab

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 is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target=

CVSS 8.2 · High
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I. Basic Information for CVE-2026-102673

Vulnerability Information

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Vulnerability Title
Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab
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 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
electron electron < 41.10.4 -

II. Public POCs for CVE-2026-102673

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III. Intelligence Information for CVE-2026-102673

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Other References for CVE-2026-102673 (8)

Same Patch Batch · electron · 2026-09-29 · 5 CVEs total

CVE-2026-102676 8.3 HIGH Electron: <webview> can enable Node.js integration in Web Workers despite embedder restric
CVE-2026-102674 8.2 HIGH Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox re
CVE-2026-102677 7.8 HIGH Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
CVE-2026-102675 7.4 HIGH Electron: File and HTTP protocol handlers allow cross-origin reads without corsEnabled

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-102673

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