CVE-2026-34767
Fixed upstream EPSS <1%CVSS 5.9
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.
Products: electron
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| npm | electron | 38.8.6 |
| npm | electron | 39.8.3 |
| npm | electron | 40.8.3 |
| npm | electron | 41.0.3 |