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.
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Affected Vendors & Products
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History
Wed, 05 Aug 2026 19:30:00 +0000
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Wed, 05 Aug 2026 17:45:00 +0000
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Electron
Electron electron |
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Electron
Electron electron |
Wed, 05 Aug 2026 16:15:00 +0000
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| 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. | |
| Title | Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads | |
| Weaknesses | CWE-942 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-05T18:41:32.481Z
Reserved: 2026-08-04T19:50:27.328Z
Link: CVE-2026-70604
Updated: 2026-08-05T18:13:53.489Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-08-05T18:15:05Z