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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/electron/electron/security/advisories/GHSA-4p4r-m79c-wq3v	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:electronjs:electron::::::node.js::*
	cpe:2.3:a:electronjs:electron::::::node.js::*
	cpe:2.3:a:electronjs:electron::::::node.js::*
	cpe:2.3:a:electronjs:electron::::::node.js::*

History

09 Apr 2026, 16:16

Type	Values Removed	Values Added
References	~~() https://github.com/electron/electron/security/advisories/GHSA-4p4r-m79c-wq3v -~~	() https://github.com/electron/electron/security/advisories/GHSA-4p4r-m79c-wq3v - Vendor Advisory
CPE		cpe:2.3:a:electronjs:electron::::::node.js::*
First Time		Electronjs electron Electronjs

04 Apr 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-04 00:16

Updated : 2026-04-09 16:16

NVD link : CVE-2026-34767

Mitre link : CVE-2026-34767

CVE.ORG link : CVE-2026-34767

JSON object : View

Products Affected

electronjs

electron

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-113

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

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