# CVE-2026-70604

## Summary

- **CVE ID:** CVE-2026-70604
- **Severity:** HIGH
- **CVSS Score:** 7.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N)
- **CWE:** CWE-942
- **Published:** Aug 5, 2026
- **Last Modified:** Aug 5, 2026

## Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0.

## Affected Products

- electron — electron (< 39.8.10)
- electron — electron (>= 40.0.0-alpha.1, < 40.9.3)
- electron — electron (>= 41.0.0-alpha.1, < 41.4.0)
- electron — electron (>= 42.0.0-alpha.1, < 42.0.0)

## References

- [CNA](https://github.com/electron/electron/security/advisories/GHSA-v3j7-r9gq-3gjw)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.28%
- **EPSS Percentile:** 20.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._