CVE-2026-34767
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.3, 40.8.3, and 41.0.3, apps that register custom protocol handlers via protocol.handle() / protocol.registerSchemesAsPrivileged() or modify response headers via webRequest.onHeadersReceived may be vulnerable to HTTP response header injection if attacker-controlled input is reflected into a response header name or value. An attacker who can influence a header value may be able to inject additional response headers, affecting cookies, content security policy, or cross-origin access controls. Apps that do not reflect external input into response headers are not affected. This issue has been patched in versions 38.8.6, 39.8.3, 40.8.3, and 41.0.3.
How to fix
- electronjs electron38.8.6, 39.8.3, 40.8.3, 41.0.3 or later
- electron38.8.6, 39.8.3, 40.8.3, 41.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| electronjs electron | v < 38.8.6, 39.0.0 ≤ v < 39.8.3, 40.0.0 ≤ v < 40.8.3, 41.0.0 ≤ v < 41.0.3 | 38.8.6, 39.8.3, 40.8.3, 41.0.3 |
| electronnpm | v < 38.8.6, 39.0.0-alpha.1 ≤ v < 39.8.3, 40.0.0-alpha.1 ≤ v < 40.8.3, 41.0.0-alpha.1 ≤ v < 41.0.3 | 38.8.6, 39.8.3, 40.8.3, 41.0.3 |
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Attack Surface Management
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