CVE-2026-34778
Fixed upstream EPSS <1%CVSS 5.9
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, a service worker running in a session could spoof reply messages on the internal IPC channel used by webContents.executeJavaScript() and related methods, causing the main-process promise to resolve with attacker-controlled data. Apps are only affected if they have service workers registered and use the result of webContents.executeJavaScript() (or webFrameMain.executeJavaScript()) in security-sensitive decisions. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.
Products: electron
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| npm | electron | 38.8.6 |
| npm | electron | 39.8.1 |
| npm | electron | 40.8.1 |
| npm | electron | 41.0.0 |