CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NCVE-2026-34778
Medium (6.5) in electronjs electron. EPSS 0.1% chance of exploitation in the next 30 days. Fixed in electron 38.8.6, 39.8.1, 40.8.1.
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.
Severity
- EPSS
- 0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-290, CWE-345
- Published
- Modified
- Record from
- the NVD, synced
Affected
- electronjs:electron
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-xj5x-m3f3-5x3h | npm | electron | <38.8.6 | 38.8.6 |
| GHSA-xj5x-m3f3-5x3h | npm | electron | >=39.0.0-alpha.1 <39.8.1 | 39.8.1 |
| GHSA-xj5x-m3f3-5x3h | npm | electron | >=40.0.0-alpha.1 <40.8.1 | 40.8.1 |
| GHSA-xj5x-m3f3-5x3h | npm | electron | >=41.0.0-alpha.1 <41.0.0 | 41.0.0 |