CVE-2026-102674

Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions

Published Sep 29, 2026 CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, windows opened from a sandboxed top-level document did not inherit that document's active HTML sandbox restrictions. Untrusted content in a sandboxed top-level document that was permitted to open popups could therefore create a window with the Electron application's full origin instead of the restricted origin intended by the sandbox. Applications that deny such popups with setWindowOpenHandler are not affected. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-gr2m-v5gq-v685 Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions
History
Type Values Removed Values Added
First Time appeared Electronjs
Electronjs electron
CPEs cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha8:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:alpha9:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:44.0.0:beta4:*:*:*:node.js:*:*
Vendors & Products Electronjs
Electronjs electron
Type Values Removed Values Added
First Time appeared Electron
Electron electron
Vendors & Products Electron
Electron electron
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, windows opened from a sandboxed top-level document did not inherit that document's active HTML sandbox restrictions. Untrusted content in a sandboxed top-level document that was permitted to open popups could therefore create a window with the Electron application's full origin instead of the restricted origin intended by the sandbox. Applications that deny such popups with setWindowOpenHandler are not affected. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.
Title Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions
Weaknesses CWE-266
CWE-693
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 29, 2026, 5:20 PM
Reserved
Sep 29, 2026, 4:10 PM
Status
Analyzed
Published
Sep 29, 2026, 5:17 PM
Modified
Oct 15, 2026, 1:58 PM
Severity
Important
Public date
Sep 29, 2026, 4:51 PM