CVE-2026-34777 in Electron

Resumen (Inglés)

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.

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Responsable

GitHub_M

Reservar

2026-03-30

Divulgación

2026-04-04

Estado

Confirmado

Voces

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerabilidad	CWE	Exp	Con	CVE
355233	Electron setPermissionRequestHandler escalada de privilegios	346	No está definido	Arreglo oficial	CVE-2026-34777

Fuentes

• MITRE
• NVD
• CVE Details