Report: CVE-2026-34767 - Electron: HTTP Response Header Injection in custom protocol handlers and webRequest - Guide

Report: CVE-2026-34767 - Electron: HTTP Response Header Injection in custom protocol handlers and webRequest - Guide

CVE ID :CVE-2026-34767 Published : April 4, 2026, 12:16 a.m. | 1 hour, 41 minutes ago 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. Severity: 5.9 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Severity
MEDIUM
Published
April 4, 2026