CVE-2026-102674
Received
Received - Intake
Electron Sandbox Bypass via Popup Window
Vulnerability report for CVE-2026-102674, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-29
Last updated on: 2026-09-29
Assigner: GitHub, Inc.
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| electron | electron | to 41.10.6 (inc) |
| electron | electron | to 42.9.2 (inc) |
| electron | electron | to 43.4.1 (inc) |
| electron | electron | to 44.0.0-beta.5 (inc) |
| electron | electron | to 42.9.2 (exc) |
| electron | electron | to 43.4.1 (exc) |
| electron | electron | to 44.0.0-beta.5 (exc) |
| electron | electron | 44.0.0-beta.5 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-693 | The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. |
| CWE-266 | A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor. |
