CVE-2026-34777— Electron: Incorrect origin passed to permission request handler for iframe requests
Quick assessment
Affected
electron electron
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Electron是Electron开源的一个用户编写跨平台桌面应用的 JavaScript 框架。该框架基于 nodejs 和 Chromium 可以使用HTML，CSS实现跨平台桌面应用的编写。 Electron 38.8.6之前版本、39.8.1之前版本、40.8.1之前版本和41.0.0之前版本存在访问控制错误漏洞，该漏洞源于iframe请求全屏、指针锁定、键盘锁定、打开外部或媒体权限时，传递给session.setPermissionRequestHandler的来源是顶级页面来源而非请求ifra
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I. Basic Information for CVE-2026-34777
Vulnerability Information
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Vulnerability Title
Electron: Incorrect origin passed to permission request handler for iframe requests
Source: CVE Program / CVE List V5
Vulnerability Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, when an iframe requests fullscreen, pointerLock, keyboardLock, openExternal, or media permissions, the origin passed to session.setPermissionRequestHandler() was the top-level page's origin rather than the requesting iframe's origin. Apps that grant permissions based on the origin parameter or webContents.getURL() may inadvertently grant permissions to embedded third-party content. The correct requesting URL remains available via details.requestingUrl. Apps that already check details.requestingUrl are not affected. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5
Vulnerability Title
Electron 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Electron是Electron开源的一个用户编写跨平台桌面应用的 JavaScript 框架。该框架基于 nodejs 和 Chromium 可以使用HTML，CSS实现跨平台桌面应用的编写。 Electron 38.8.6之前版本、39.8.1之前版本、40.8.1之前版本和41.0.0之前版本存在访问控制错误漏洞，该漏洞源于iframe请求全屏、指针锁定、键盘锁定、打开外部或媒体权限时，传递给session.setPermissionRequestHandler的来源是顶级页面来源而非请求ifra
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-34777
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-34777 (1)
Same Patch Batch · electron · 2026-04-03 · 13 CVEs total
| CVE-2026-34774 | 8.1 HIGH | Electron: Use-after-free in offscreen child window paint callback |
| CVE-2026-34769 | 7.8 HIGH | Electron: Renderer command-line switch injection via undocumented commandLineSwitches webP |
| CVE-2026-34771 | 7.5 HIGH | Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permis |
| CVE-2026-34770 | 7.0 HIGH | Electron: Use-after-free in PowerMonitor on Windows and macOS |
| CVE-2026-34775 | 6.8 MEDIUM | Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes |
| CVE-2026-34767 | 5.9 MEDIUM | Electron: HTTP Response Header Injection in custom protocol handlers and webRequest |
| CVE-2026-34778 | 5.9 MEDIUM | Electron: Service worker can spoof executeJavaScript IPC replies |
| CVE-2026-34772 | 5.8 MEDIUM | Electron: Use-after-free in download save dialog callback |
| CVE-2026-34776 | 5.3 MEDIUM | Electron: Out-of-bounds read in second-instance IPC on macOS and Linux |
| CVE-2026-34773 | 4.7 MEDIUM | Electron: Registry key path injection in app.setAsDefaultProtocolClient on Windows |
| CVE-2026-34768 | 3.9 LOW | Electron: Unquoted executable path in app.setLoginItemSettings on Windows |
| CVE-2026-34766 | 3.3 LOW | Electron: USB device selection not validated against filtered device list |
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Same vendor: electron
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Same weakness: CWE-346
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V. Comments for CVE-2026-34777
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