CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NCVE-2026-34767
Medium (6.5) in electronjs electron. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in electron 38.8.6, 39.8.3, 40.8.3.
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
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-74, CWE-113
- Published
- Modified
- Record from
- the NVD, synced
Affected
- electronjs:electron
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4p4r-m79c-wq3v | npm | electron | <38.8.6 | 38.8.6 |
| GHSA-4p4r-m79c-wq3v | npm | electron | >=39.0.0-alpha.1 <39.8.3 | 39.8.3 |
| GHSA-4p4r-m79c-wq3v | npm | electron | >=40.0.0-alpha.1 <40.8.3 | 40.8.3 |
| GHSA-4p4r-m79c-wq3v | npm | electron | >=41.0.0-alpha.1 <41.0.3 | 41.0.3 |