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CVE-2026-102677— Electron: Sandboxed preload code cache can be poisoned by a compromised renderer

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. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was

CVSS 7.8 · High
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I. Basic Information for CVE-2026-102677

Vulnerability Information

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Vulnerability Title
Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
Source: CVE Program / CVE List V5
Vulnerability Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
electron electron >= 42.3.3, < 42.10.0 -

II. Public POCs for CVE-2026-102677

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III. Intelligence Information for CVE-2026-102677

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Other References for CVE-2026-102677 (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-2026-102673 8.2 HIGH Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTa
CVE-2026-102674 8.2 HIGH Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox re
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-20

V. Comments for CVE-2026-102677

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