CVE-2026-34767

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.

The following products are affected by CVE-2026-34767 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34767.

URL	Resource
https://github.com/electron/electron/security/advisories/GHSA-4p4r-m79c-wq3v
https://nvd.nist.gov/vuln/detail/CVE-2026-34767
https://www.cve.org/CVERecord?id=CVE-2026-34767