Electron: HTTP Response Header Injection in custom protocol handlers and webRequest (electron electron)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component
- CWE-113 — Improper Neutralization of CRLF Sequences in HTTP Headers
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N | GitHub_M |
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-4p4r-m79c-wq3v — Electron: HTTP Response Header Injection in custom protocol handlers and webRequest
European references
- ENISA EUVD · EUVD-2026-18933
- GCVE · GCVE-0-2026-34767
Affected configurations (NVD CPE)
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*< 38.8.6cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 39.0.0 < 39.8.3cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 40.0.0 < 40.8.3cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 41.0.0 < 41.0.3
Affected products
| Product | Versions |
|---|---|
| electron · electron | affected < 38.8.6 ; affected >= 39.0.0-alpha.1, < 39.8.3 ; affected >= 40.0.0-alpha.1, < 40.8.3 ; affected >= 41.0.0-alpha.1, < 41.0.3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |