cvedb.io
CVE-2026-34778
MEDIUM · CVSS 5.9
EPSS exploitation probability: 0%
Published 2026-04-04T00:16:19.060 · Last modified 2026-06-17T10:39:36.523

Summary

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.

Affected products

electronjs — electron

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.